Gst registration doubt... for vat & service tax related

One PAN one registration with GST, may be via any of provisional IDs provided by VAT or any other authority.

Any more data (profile change) can be inserted at the time of final registration.

thank u sir

use provisional id received from vat department for enrollment. Only 1 form will be filled if you have only one pan and both vat and service tax number. If you have not entered details of service tax in the form then you have to wait till gst implementation. After that you can enter the pending details.