The supplier taxpayer can take one of the three actions on the auto-drafted details in his GSTR-1A.

Accept: Accept the changes or additions made by the recipients.

Reject; Reject the changes or additions made by the recipients

Pending: Keep pending the auto-populated changes or additions made by the recipients. In such cases the details in GSTR-1A would get rolled over to Form GSTR-1 of the next period.

If the supplier does not take any action or does not file his GSTR-1A, then aa pending/ no actions transactions would get rolled over to the next period GSTR-1.

Note: The auto-populated details in GSTR-1A cannot be modified by the suppliers.