GSTR1 filing issue for ISD Invoices in B2B

Solution steps:-

Manual entry:-One possible workaround is to manually enter the details of ISD invoices in the GSTR1 return. This can be done by adding the ISD invoices as "B2B' invoices in the GSTR1 template and then manually calculating the tax liability.

Contact GST support:- If manual entry is not feasible or if there are a large number of ISD invoices, it may be necessary to contact the GST support team for assistance. 

Software Update: - If you are using accounting software to generate the JSON file, check if there is an update available that can handle ISD invoices correctly.