GST Registration is applicable on all goods and services except Petroleum products as of now.
After receipt of GST Registration Certificate, if you wish to modify any fields such as name, address, email ID, contact details, you need to apply for GST Modification request.
Permanent Account Number (PAN) is a ten-digit alphanumeric number, for eg. AAAAA0000A, issued in the form of a laminated card, by the Indian Income Tax Department, to any “person” who applies for it or to whom the department allows the number without an application.
TAN i.e. Tax Deduction and Collection Account Number is a 10 digit alphanumeric number, e.g. DELM12345L, required to be obtained by all persons who are responsible for deducting tax at source or collecting tax at source.