You may go through the following link https://udin.icai.org/faqs for UDIN creation Applicability on which documents required or not. For your Query its Yes all certificate or documents issued by the Chartered Accountant required to create UDIN as well. Refer B (15)
|Process for UDIN
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As per the new guidelines, every certificate to be issued by any practicing professional has to contain the UDIN per se. In your case of NDH-4, the attestation of a Chartered Accountant on a certificate or any such document is of immense value since it usually signifies that the Chartered Accountant, in his professional opinion, has ensured that there is no misrepresentation by the entity issuing/submitting such a document.