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How Can a Practicing CA Register And Generate UDIN Number Online?

FAQs UDIN for Practicing CA

UDIN is a type of certificate that is been issued via a Chartered accountant representing the correctness and fairness of the same document. Since the UDIN is a testament that there has been no misrepresentation of the data in the attested document hence it has effective value and the stakeholders can trust the data furnished in that document. In the same blog, the discussion is about the UDIN number, its applicability the process to generate UDIN, and the UDIN verification process.

To control the bogus practices the Professional Development Committee of ICAI has made procedurally a new idea of UDIN which is a Unique Document Identification Number. From 1st Feb 2019, all the certificates will be essential under the compliances made by the council avail at its 379th Meeting held on 17th – 18th December 2018.

The CAs who own a full-time Certificate of Practice could enrol on the UDIN portal and generate UDIN by registering the certificates attested/certified by them.

For the process, you can tap here for Frequently-Asked Questions, tap on the FAQs for Practicing Chartered Accountants, and for any query, tap on the Complaints or you can email at

What Does the Term UDIN Stand For?

The UDIN, or Unique Document Identification Number, is an 18-digit unique identifier generated by the system for each document attested or certified by practising chartered accountants.

In these 18 digits, the

  • The first 2 digits are YY – The last 2 digits of the current year. For instance, 96 from the year 1996.
  • The next 6 digits are MMMMMM – The membership number of ICAI.
  • The next 10 Digits are AANNNAANNN – Alpha-numeric system-generated code.

When is UDIN Applicable?

According to ICAI regulations, practising chartered accountants are required to acquire a UDIN for all certificates they issue, especially if the certification asserts the document’s accuracy and fairness. Only CAs with a valid practice certificate can register on the UDIN portal and generate a UDIN for the documents or certificates they attest. This requirement is mandatory for the following services –

  • All certificates issued from 1st Feb 2019.
  • GST and Income Tax Audit from 1st April 2019.
  • All audit and assurance functions from 1st July 2019.

CA-generated UDIN could be searched on the UDIN portal via by typing the name, email ID, and contact of the person making the request.

What is the method to Register on the UDIN Portal?

Full-time practising Chartered Accountants must initially enrol on the UDIN portal before they can begin generating UDINs for attested documents.

Step 1. Proceed to this link.

Step 2. Select ‘first-time user’ and then enter the 6-digit membership number, date of enrolment, and date of birth, and click on ‘send OTP.’

Step 3: Input the OTP received via email and the mobile number registered with ICAI. Upon clicking “continue,” the system will dispatch login credentials generated by the system to your email address registered with ICAI.

Read Also: Extension of UDIN Special Amnesty Scheme 2023 by ICSI: FAQ

What is the method to Generate UDIN for a Document?

Step 1. Proceed to this link and login via the credentials sent to your email address. You could change the password for the UDIN portal. It will be good if you do so after logging in for the first time.

Step 2. Tap on ‘Generate UDIN.’

Step 3. Insert information like as email ID, name, firm registration number, membership registration number, firm name, client reference code/number, keywords, and values, and click on submit OTP.

Step 4. An OTP is sent to the mobile number or the email address registered with ICAI. After entering the OTP, you can preview the data entered and verify them. If everything is correct, you can tap on submit.

Step 5. Now, you are enabled to generate the UDIN.

What is the method to do the UDIN verification?

The introduction of UDIN by the government aims to curb the misrepresentation of Chartered Accountants, preventing unauthorized individuals from posing as CAs and forging signatures to deceive authorities.

UDIN serves as a tool for authorities to verify the authenticity of documents issued by Chartered Accountants. Its exclusive generation through the UDIN portal ensures that the document has undergone a comprehensive examination and certification by a practising Chartered Accountant.

UDIN Verification Process

UDIN could get validated via tapping on ‘Verify UDIN’ on the UDIN portal and complying with the below-stated steps –

Step 1. Click on ‘Verify UDIN.’ After this, a window asking you to enter a few details will open.

Step 2. Enter the details such as mobile number, email ID, and name of the authority.

What is the method to validate the documents using UDIN?

Once a UDIN is generated for a document, the information within the document remains immutable. However, if circumstances necessitate alterations or complete revocation/cancellation of the document, you can locate the document on the UDIN portal and select the ‘Revoke’ option.

Frequently Asked Questions

Q- What is the method to correct the error in the form with a valid UDIN after it has been issued?

If an error is identified in the form associated with a valid UDIN post-upload, correction involves revising the form with a new UDIN and revoking the old/existing UDIN linked to the initial submission.

Q: What types of documents can be authenticated using UDIN?

UDIN applies to both digitally and manually signed reports uploaded online. In cases where digitally signed online reports lack a designated field for UDIN, it is advisable to generate and retain it for future presentation to stakeholders upon request.

Q: Is there a limit on UDIN generation?

As per the UDIN regulations set by the Central Government, there is no restriction on the quantity of UDINs a CA can generate. Moreover, a UDIN holds indefinite validity unless revoked by the relevant authority.

We have cleared some of the basic points within the post, however, if one is interested much more than the basic, then he can anytime visit the given below link for reference with the inclusion of applicability, process version of the Frequently Asked Questions(FAQs).

If you are seeking to access more information about the Unique Document Identification Number (UDIN) then you can proceed by clicking on the link

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