Philippine Legal and Administrative Context
I. Introduction
In the Philippines, a birth certificate is one of the most important civil registry documents required for passport applications. It proves a person’s identity, citizenship, parentage, place of birth, and date of birth. For many years, Filipinos commonly referred to official birth certificates as “NSO birth certificates” because they were issued by the National Statistics Office. Today, the proper reference is usually PSA birth certificate, because the issuing agency is now the Philippine Statistics Authority.
The practical question often asked by passport applicants is this:
Can an old NSO birth certificate still be used for a Philippine passport, or must the applicant submit a PSA birth certificate?
In present administrative practice, the Department of Foreign Affairs generally requires a birth certificate issued by the Philippine Statistics Authority, especially for new passport applications, minors, applicants with lost passports, and cases involving corrections or identity concerns. Although older documents may still reflect genuine civil registry records, applicants are usually expected to present the current PSA-issued version because PSA is now the official civil registry authority.
This article explains the legal and practical significance of using a PSA birth certificate instead of an NSO birth certificate for Philippine passport applications.
II. Historical Background: From NSO to PSA
The term “NSO birth certificate” comes from the former National Statistics Office, which previously issued certified copies of civil registry documents such as birth certificates, marriage certificates, death certificates, and certificates of no marriage record.
The NSO was later reorganized into the Philippine Statistics Authority under the Philippine Statistical Act of 2013. The PSA absorbed the civil registration functions of the NSO. As a result, civil registry documents that people used to call “NSO copies” are now issued as PSA copies.
Thus, when government agencies now ask for a birth certificate, they commonly require a PSA-issued birth certificate, not an NSO-issued one.
The change is mostly institutional and administrative. The civil registry record itself may be the same underlying record, but the issuing authority and official document format have changed.
III. Legal Basis of the PSA’s Authority
The Philippine Statistics Authority is the government agency responsible for civil registration functions at the national level. It maintains and issues certified copies of vital records, including birth certificates.
The local civil registrar records births at the city or municipal level. These records are then transmitted to the national civil registry system, where the PSA maintains official copies.
For passport purposes, the Department of Foreign Affairs relies on PSA-issued civil registry documents because they are nationally certified records. A PSA birth certificate provides official evidence that the applicant’s birth has been registered in the Philippine civil registry system.
IV. Role of the Department of Foreign Affairs
The Department of Foreign Affairs, or DFA, is the government agency responsible for issuing Philippine passports. A passport is both a travel document and evidence of Philippine nationality.
Because a passport identifies the bearer as a Filipino citizen, the DFA must verify the applicant’s identity and citizenship. The PSA birth certificate is a primary document for this purpose.
For first-time adult applicants, the PSA birth certificate is usually one of the core documentary requirements. For minors, it is likewise essential because it establishes identity, date of birth, parentage, and the authority of the accompanying parent or guardian.
V. What Is a PSA Birth Certificate?
A PSA birth certificate is a certified copy of a person’s birth record issued by the Philippine Statistics Authority. It usually contains:
- Name of the child;
- Sex;
- Date of birth;
- Place of birth;
- Names of parents;
- Citizenship of parents;
- Date and place of registration;
- Registry number;
- Certification or security markings of the PSA.
It may be printed on official security paper or issued through an official PSA-authorized process. For government transactions, the PSA copy is treated as a certified civil registry document.
VI. What Was an NSO Birth Certificate?
An NSO birth certificate was a certified copy of a birth record issued by the former National Statistics Office before the creation of the PSA. Many Filipinos still keep old NSO copies in their personal files.
These documents may have been validly issued at the time. However, because the NSO no longer functions as the current issuing authority for civil registry documents, agencies now generally request the updated PSA-issued version.
The term “NSO” is still commonly used in everyday speech, but legally and administratively, the proper agency today is PSA.
VII. Is an NSO Birth Certificate Still Valid?
This is where confusion usually arises.
An old NSO birth certificate may reflect a genuine civil registry record. It does not automatically become fake simply because it says “NSO.” However, for passport purposes, the DFA may require a PSA-issued birth certificate because the PSA is the present government authority.
In practical terms:
An NSO birth certificate may show that a birth record exists, but a PSA birth certificate is generally the document expected for current passport processing.
Applicants should not assume that an old NSO copy will be accepted just because it was accepted in the past. Passport requirements are applied according to current DFA rules and document standards.
VIII. Why the DFA Requires PSA Instead of NSO
The DFA’s preference for PSA-issued birth certificates serves several purposes.
First, it ensures that the document comes from the current national civil registry authority.
Second, it reduces the risk of outdated, altered, damaged, or unverifiable documents.
Third, it allows the DFA to rely on more current civil registry records, especially where there may have been corrections, late registrations, annotations, legitimation, adoption, annulment-related changes, or other civil registry updates.
Fourth, it promotes uniformity. If all applicants submit PSA-issued documents, DFA personnel can more easily review and verify them.
IX. Passport Application Categories Where PSA Birth Certificate Is Important
A. First-Time Adult Applicants
A first-time adult applicant generally needs a PSA birth certificate to prove identity and citizenship. This is especially important if the applicant has never been issued a Philippine passport.
The birth certificate must match the applicant’s valid identification documents. Any discrepancy in name, date of birth, place of birth, or parentage may require additional documents.
B. Minor Applicants
For minors, a PSA birth certificate is especially important because it proves the child’s identity and establishes the relationship between the child and the parent or parents.
The DFA uses the birth certificate to determine who may accompany the minor, who may give consent, and whether additional documents are needed, such as a marriage certificate, special power of attorney, affidavit of support and consent, or documents relating to custody.
C. Renewal of Passport
For simple passport renewal, the old passport is usually the main document. However, a PSA birth certificate may still be required in certain cases, such as:
- Change of name;
- Lost or mutilated passport;
- Incomplete or inconsistent passport data;
- Old brown or green passport issues;
- Correction of personal information;
- Minor renewal cases;
- Applications where identity or citizenship must be re-established.
Thus, even renewal applicants may sometimes need a PSA birth certificate.
D. Lost Passport Applications
If a passport is lost, the DFA may require additional identity and civil registry documents, including a PSA birth certificate. This helps re-establish identity and prevent fraudulent replacement applications.
E. Mutilated or Damaged Passport Applications
A damaged passport may no longer be reliable as proof of identity. The DFA may require a PSA birth certificate and supporting IDs to verify the applicant’s identity.
F. Change of Name
A PSA birth certificate is commonly needed when the applicant seeks a passport reflecting a corrected, amended, or updated name.
For married women who wish to use their married surname, a PSA marriage certificate is usually required. However, the birth certificate may still be relevant where identity must be confirmed.
G. Late-Registered Birth Certificates
If a birth certificate was registered late, the DFA may require additional supporting documents. This is because late registration can raise identity verification concerns.
Additional documents may include baptismal certificates, school records, medical records, voter records, employment records, or other documents showing consistent use of the applicant’s name and date of birth.
X. PSA Birth Certificate on Security Paper
A PSA birth certificate is commonly issued on official security paper. This paper contains security features intended to reduce fraud and unauthorized reproduction.
For passport purposes, applicants should submit the official PSA-issued document, not merely a photocopy. The DFA may inspect the original and retain a photocopy, depending on its requirements.
Applicants should avoid presenting scanned, edited, laminated, or tampered documents. A civil registry document must remain readable and authentic.
XI. Certified True Copy from the Local Civil Registrar
Sometimes an applicant’s PSA birth certificate is unavailable, unreadable, blurred, or contains errors. In such cases, the applicant may need to obtain a certified true copy from the Local Civil Registrar.
The Local Civil Registrar is the city or municipal office where the birth was originally registered. It may have clearer or more complete records than the PSA copy, especially for older records.
However, for passport purposes, the DFA may still require the PSA copy together with the local civil registrar copy. The local copy may support or explain the PSA record, but it does not always replace the PSA requirement.
XII. Negative Certification or No Birth Record Found
Some applicants discover that the PSA has no record of their birth. This may happen due to non-registration, delayed transmission, clerical problems, destruction of records, or errors in indexing.
In such cases, the PSA may issue a negative certification, meaning no birth record was found under the searched details.
A negative certification does not prove that the person was not born. It only means that no matching record was found in PSA records. The applicant may need to coordinate with the Local Civil Registrar to confirm whether a birth record exists locally.
Possible remedies include:
- Endorsement of the local birth record to the PSA;
- Late registration of birth;
- Correction of wrong entries;
- Submission of supporting identity documents;
- Compliance with DFA additional requirements.
XIII. Late Registration of Birth
Late registration occurs when a person’s birth was not registered within the required period after birth and is later recorded.
For passport purposes, late-registered birth certificates are subject to closer scrutiny because they may be more vulnerable to identity fraud or delayed documentation issues.
This does not mean late-registered applicants cannot obtain passports. It only means they may need to submit more proof of identity and citizenship.
Additional documents may include:
- Baptismal certificate;
- School records;
- Form 137 or transcript;
- Voter’s certification;
- Employment records;
- Medical or hospital records;
- Old government IDs;
- Affidavits of persons with personal knowledge;
- Other documents showing consistent identity over time.
XIV. Birth Certificate Errors and Passport Applications
A common passport problem arises when the PSA birth certificate contains an error. Examples include:
- Misspelled first name;
- Wrong middle name;
- Wrong sex;
- Incorrect date of birth;
- Incorrect place of birth;
- Wrong parent’s name;
- Missing middle name;
- Inconsistent surname;
- Typographical errors;
- Illegible entries.
The DFA generally relies on the PSA record. If the birth certificate contains an error, the applicant may be required to correct the civil registry record before the passport can be issued with the desired information.
XV. Correction of Clerical or Typographical Errors
Certain errors in a birth certificate may be corrected through administrative proceedings under civil registration laws. These may include clerical or typographical errors, and in some cases changes involving first name, sex, or date of birth, depending on the nature of the error and the applicable requirements.
The correction process usually begins with the Local Civil Registrar where the birth was registered. Once approved, the corrected record must be reflected in the PSA record. The applicant may then request an updated PSA birth certificate with annotation.
For passport purposes, the corrected or annotated PSA birth certificate may be required before the DFA will issue the passport with the corrected details.
XVI. Annotated PSA Birth Certificate
An annotated PSA birth certificate is a birth certificate that shows an official note or annotation reflecting a legal change or correction. Annotations may result from:
- Correction of clerical error;
- Change of first name;
- Legitimation;
- Adoption;
- Court order;
- Recognition by father;
- Change of surname;
- Other civil registry actions.
When a person’s identity has been legally changed or corrected, the DFA may require the annotated PSA birth certificate to confirm the legal basis for the passport details.
XVII. Legitimation and Passport Applications
Legitimation may occur when a child born out of wedlock is later considered legitimate under Philippine law due to the subsequent valid marriage of the parents, subject to legal requirements.
If legitimation affects the child’s surname or status, the PSA birth certificate should contain the proper annotation. The DFA may require the annotated PSA copy before issuing a passport under the updated surname.
An old NSO birth certificate without the annotation may not be sufficient if the applicant wants the passport to reflect the legitimized surname.
XVIII. Acknowledgment or Recognition by the Father
For children born outside marriage, the father’s acknowledgment may affect surname use. If the child uses the father’s surname, the birth certificate and related documents must support that usage.
The DFA may examine whether the PSA birth certificate contains the father’s information, whether there is an affidavit of acknowledgment or admission of paternity, and whether the child’s surname use is legally supported.
If the old NSO copy does not reflect later annotations or corrections, the PSA copy is necessary.
XIX. Adoption and Passport Applications
For adopted persons, the PSA record may be affected by adoption proceedings. A new or amended birth certificate may be issued depending on the legal effect of the adoption.
For passport purposes, the DFA may require the PSA birth certificate reflecting the adoption, along with the court order or other supporting documents if needed.
An outdated NSO birth certificate may not reflect the applicant’s current legal identity after adoption.
XX. Married Women and Birth Certificates
A married woman applying for a passport may need both a PSA birth certificate and a PSA marriage certificate, depending on the application type and the name she wishes to use.
If she wishes to use her married surname, the PSA marriage certificate is usually required. The birth certificate may still be used to establish her original identity.
If she wishes to retain or revert to her maiden name, additional rules may apply depending on whether she is married, widowed, annulled, divorced abroad, or recognized under Philippine law as having legal basis to revert.
The PSA birth certificate remains important as the root identity document.
XXI. Passport for Minors and PSA Birth Certificate
A minor’s passport application typically requires a PSA birth certificate because it establishes the child’s identity and parental relationship.
For minors, the DFA may also require:
- Personal appearance of the minor;
- Personal appearance of a parent or authorized adult companion;
- Valid ID of the parent or guardian;
- Marriage certificate of parents, when relevant;
- Special power of attorney or affidavit of support and consent, if applicable;
- DSWD travel clearance in certain cases;
- Court orders or custody documents in special circumstances.
The PSA birth certificate is central because it shows who the child’s parents are and whether the accompanying adult has authority.
XXII. Illegitimate Minors
For illegitimate minors, the mother generally has parental authority under Philippine law, unless a court or specific legal arrangement provides otherwise. The PSA birth certificate helps determine the child’s filiation and the identity of the mother.
If the father is accompanying the child or applying on behalf of the child, the DFA may require additional proof of authority from the mother, unless special circumstances apply.
Again, the PSA birth certificate is critical because it provides the baseline civil registry record.
XXIII. Foundlings and Persons Without Standard Birth Records
Foundlings and persons with special civil status may face unique documentation issues. A standard PSA birth certificate may not exist in the ordinary form, or the record may have special annotations.
For passport purposes, the DFA may require alternative documents proving identity and citizenship, subject to Philippine law and administrative requirements.
Such cases often require careful coordination with the PSA, Local Civil Registrar, DSWD, courts, or other relevant agencies.
XXIV. Natural-Born Filipino Citizenship and Birth Certificates
A PSA birth certificate is not just proof of age or name. It may also help prove Philippine citizenship.
For most persons born in the Philippines to Filipino parents, the birth certificate reflects parentage and place of birth. Since Philippine citizenship is primarily based on blood relation to Filipino parents, the identity and citizenship of the parents may be relevant.
Where the applicant’s citizenship is unclear, the DFA may require additional documents beyond the birth certificate.
XXV. Dual Citizens and PSA Birth Certificate
Dual citizens, including those who reacquired Philippine citizenship, may need a PSA birth certificate when applying for a Philippine passport.
The birth certificate proves the person’s Philippine birth and parentage. However, dual citizenship applicants may also need identification certificates, oath of allegiance documents, orders of approval, foreign passports, or other documents depending on their case.
An old NSO birth certificate may not be enough for current passport processing if a PSA-issued version is required.
XXVI. Applicants Born Abroad
A person born abroad to Filipino parent or parents may not have a regular Philippine birth certificate. Instead, the birth may have been reported to the Philippine embassy or consulate through a Report of Birth.
The equivalent civil registry document may be a PSA copy of the Report of Birth. For passport purposes, the applicant may need the PSA-issued Report of Birth or consular birth record, depending on the application.
The same principle applies: current DFA practice generally relies on PSA-issued civil registry documents when available.
XXVII. Photocopies, Scanned Copies, and Digital Copies
For passport applications, applicants should not rely solely on photocopies or scanned copies of a birth certificate. The DFA usually requires presentation of the original PSA-issued document and photocopies as needed.
A scanned copy may be useful for preliminary review, but it is generally not a substitute for the official document.
Applicants should also avoid submitting laminated documents because lamination can obscure security features and make verification difficult.
XXVIII. Authentication, Apostille, and Passport Use
For domestic passport applications, the DFA usually requires the PSA document itself, not an apostilled version.
Apostille is generally used when a Philippine public document will be presented abroad. Since the DFA itself is the passport-issuing authority, apostille is not usually needed merely to apply for a Philippine passport in the Philippines.
However, if a PSA birth certificate will be submitted to a foreign government, school, employer, or immigration agency, apostille or authentication may be relevant.
XXIX. Does the PSA Birth Certificate Expire?
A birth certificate, as a civil registry record, does not expire in the same way that a passport or ID expires. A person’s birth details do not change simply because time has passed.
However, government agencies may require a recently issued PSA copy for practical reasons. A recent copy helps ensure that the document reflects any annotations, corrections, legitimation, adoption, or court-ordered changes.
Thus, while the birth record itself does not expire, an old issued copy may be rejected for administrative purposes.
XXX. Why Old NSO Copies May Be Rejected
An old NSO birth certificate may be rejected or questioned because:
- The issuing agency is no longer the current civil registry authority;
- The document may not reflect later corrections or annotations;
- The security paper may be outdated;
- The document may be damaged, blurred, or unreadable;
- The DFA may require current PSA format;
- Identity verification standards have changed;
- There may be discrepancies with other documents;
- The record may need updated certification.
This is why applicants are generally advised to secure a PSA copy before their passport appointment.
XXXI. Practical Steps Before a Passport Appointment
A passport applicant should take the following steps:
- Secure a PSA birth certificate before the appointment;
- Check all entries carefully;
- Compare the name, date of birth, and place of birth with valid IDs;
- Check parents’ names, especially for minors;
- Look for annotations or missing annotations;
- Check if the record is late-registered;
- Prepare supporting documents if there are discrepancies;
- Bring the original PSA copy and photocopies;
- Do not rely on an old NSO copy alone;
- Resolve civil registry errors before applying, when possible.
XXXII. What If the Applicant Only Has an NSO Copy?
If the applicant only has an NSO copy, the safest course is to request a new PSA birth certificate.
The applicant may order it through official PSA channels, authorized outlets, or other recognized government service channels. The applicant should make sure the document is a current PSA-issued copy.
If the PSA cannot produce the record, the applicant should coordinate with the Local Civil Registrar and determine whether endorsement, reconstruction, correction, or late registration is necessary.
The NSO copy may still be useful as a reference document, but it should not be treated as the main current passport document unless the DFA expressly accepts it in the particular case.
XXXIII. Civil Registry Discrepancies and Supporting Documents
When the PSA birth certificate differs from other records, the DFA may require supporting documents. Examples:
A. Name Discrepancy
If the birth certificate says “Maria Cristina” but IDs say “Ma. Cristina,” the DFA may ask for clarification or supporting documents.
B. Middle Name Discrepancy
A wrong or missing middle name may require correction or proof of consistent identity.
C. Date of Birth Discrepancy
A mismatch in birth date is serious and may require civil registry correction before passport issuance.
D. Place of Birth Discrepancy
If the place of birth differs from other documents, additional records may be needed.
E. Parentage Discrepancy
For minors, parentage discrepancies can affect consent and parental authority.
In all these cases, the PSA birth certificate is the starting point, but not always the only required document.
XXXIV. Legal Effect of a Passport Based on PSA Records
Once issued, a passport reflects the identity accepted by the DFA based on the submitted documents. However, a passport does not cure defects in the civil registry record. If the PSA birth certificate later requires correction, the applicant may still need to correct the civil registry record and then apply for passport amendment or renewal using the corrected data.
A passport is strong evidence of identity and nationality, but it is not the original source of birth information. The civil registry record remains the foundational document.
XXXV. Administrative Discretion of the DFA
The DFA has authority to require additional documents when necessary. Even if an applicant submits a PSA birth certificate, the DFA may request more proof if there are irregularities, inconsistencies, late registration, damaged records, unreadable entries, or suspected fraud.
Thus, the PSA birth certificate is necessary in many cases, but it does not guarantee approval if other legal or identity issues remain unresolved.
XXXVI. Fraud, Misrepresentation, and False Documents
Submitting a fake birth certificate, altered civil registry document, or false identity information in a passport application may result in serious consequences.
Possible consequences include:
- Denial of passport application;
- Cancellation of passport;
- Blacklisting or administrative records;
- Criminal liability for falsification or use of falsified documents;
- Perjury or false statement liability;
- Immigration consequences;
- Future difficulty obtaining government documents.
Applicants should never attempt to “fix” a discrepancy by editing a document. The lawful remedy is correction through the Local Civil Registrar, PSA, court, or other proper legal process.
XXXVII. Data Privacy and Birth Certificates
A birth certificate contains sensitive personal information. Applicants should protect their PSA documents from unnecessary exposure.
Only authorized agencies, employers, schools, or institutions with legitimate purposes should receive copies. Posting a birth certificate online or sending it through unsecured channels may expose the applicant to identity theft or fraud.
Passport applicants should bring documents directly to the DFA and avoid giving copies to fixers or unauthorized persons.
XXXVIII. Fixers and Unauthorized Assistance
Passport applicants should avoid fixers who promise faster appointments, guaranteed approval, or acceptance of incomplete documents.
Using fixers can expose applicants to fraud, fake documents, overcharging, or identity theft. Passport processing should be done through official DFA channels.
If civil registry problems exist, they should be resolved through the PSA, Local Civil Registrar, courts, or other lawful offices, not through unofficial shortcuts.
XXXIX. Relationship Between PSA Birth Certificate and Other IDs
A PSA birth certificate is not the same as a government ID. It proves birth facts and civil registry details, while IDs prove present identity and may include photo and signature.
For passport applications, the DFA typically requires both civil registry documents and valid identification. The PSA birth certificate alone may not be enough if the applicant cannot prove that they are the person named in the birth certificate.
This is especially true for adult first-time applicants, late-registered applicants, and persons with limited government records.
XL. Special Issues for Senior Citizens
Senior citizens may have old or unclear civil registry records. Some may only have baptismal certificates, school records, or local registry documents. Others may have birth certificates with spelling inconsistencies or missing entries.
For passport purposes, senior citizens may need to obtain a PSA birth certificate or a negative certification and supporting documents. If no record exists, late registration or judicial/administrative remedies may be needed depending on the circumstances.
An old NSO copy, if available, may help trace the record, but a current PSA copy is still generally preferable.
XLI. Special Issues for Indigenous Peoples and Remote Communities
Some Filipinos from remote communities may have delayed or missing birth registration. They may have difficulty obtaining PSA records due to geographic, historical, or administrative barriers.
The law recognizes the importance of civil registration, but passport processing still requires reliable proof of identity and citizenship. Applicants in these situations may need assistance from local civil registrars, community records, affidavits, school documents, tribal certifications where relevant, and other supporting proof.
The DFA may require additional documentation to establish identity.
XLII. Practical Difference Between “NSO” and “PSA” in Passport Processing
The practical difference is simple:
NSO refers to the former agency and older issued copies.
PSA refers to the current agency and current official civil registry copies.
For passport processing, applicants should obtain and submit the PSA birth certificate rather than relying on an old NSO birth certificate.
Even if people still casually say “NSO,” the document normally required today is the PSA-issued copy.
XLIII. Frequently Asked Questions
1. Can I use my old NSO birth certificate for a passport?
It may show a genuine record, but the safer and generally expected document is a PSA-issued birth certificate. Applicants should secure a PSA copy before applying.
2. Is PSA different from NSO?
Yes, administratively. The PSA is the current government authority that took over the civil registration functions formerly associated with the NSO.
3. Does my birth certificate expire?
The birth record itself does not expire, but agencies may require a recently issued PSA copy to ensure updated records and annotations.
4. What if my PSA birth certificate has an error?
You may need to correct the civil registry record through the Local Civil Registrar, PSA, or court, depending on the error.
5. What if PSA has no record of my birth?
You may need a negative certification, local civil registrar verification, endorsement of records, late registration, or other supporting documents.
6. Is a local civil registrar copy enough?
It may help, especially if the PSA record is unclear or unavailable, but the DFA usually requires PSA-issued documents when available.
7. Do minors need PSA birth certificates for passports?
Yes, minors generally need PSA birth certificates because the document proves identity and parentage.
8. Can I submit a photocopy only?
Usually no. Applicants should present the original PSA-issued document and provide photocopies as required.
9. What if I was born abroad?
You may need a PSA-issued Report of Birth or equivalent consular civil registry document.
10. Should I still keep my old NSO copy?
Yes. It may be useful as reference, especially if there are record issues, but it should not replace the current PSA copy for passport purposes.
XLIV. Best Practices for Applicants
Passport applicants should:
- Order a PSA birth certificate early;
- Review all entries carefully;
- Resolve errors before the passport appointment;
- Prepare extra supporting documents if the record is late-registered;
- Bring valid government IDs;
- Bring photocopies of all required documents;
- Avoid relying on an old NSO copy;
- Use official channels only;
- Avoid fixers;
- Keep personal documents secure.
XLV. Conclusion
For Philippine passport applications, the birth certificate is a foundational document. While many Filipinos still use the term “NSO birth certificate,” the proper and current document is generally the PSA-issued birth certificate.
An old NSO birth certificate may reflect a genuine record, but it is usually not the preferred document for present passport processing. The Department of Foreign Affairs generally relies on PSA-issued civil registry documents because the PSA is the current national civil registry authority.
Applicants should therefore secure a PSA birth certificate before applying for a passport, especially for first-time applications, minor applications, lost passport cases, late registration issues, name corrections, and identity discrepancies.
The central rule is practical and clear: for Philippine passport purposes, use the PSA birth certificate, not an old NSO copy, unless the DFA specifically allows otherwise in the particular case.