Wrong upload of purchase invoices in GST-R-1

A user mistakenly uploaded purchase invoices instead of sales invoices in their March 2018 GST R-1 return. While direct rectification of an uploaded return isn't possible, the advice suggests filing the annual return with correct details. Alternatively, the user can upload the correct sales invoices in the next month, allowing customers to claim input tax credit. For previously uploaded incorrect invoices, it's suggested to amend them to zero, though the exact method for this is questioned.