https://userapps.support.sap.com/sap/support/knowledge/en/2849505
2849505 - GST IN: Duplicate Invoice getting generated via Transaction code J_1IG_INV | SAP...
Transaction J_1IG_INV is allowing to create duplicate inbound invoice Multiple Users trying to create an invoice for same outbound invoice at the same time....
https://userapps.support.sap.com/sap/support/knowledge/en/3554523
3554523 - "Maintain Posting configuration for XXX XXX"(J_1IG_MSGS065 ) error in app Re-distribute...
"Maintain Posting configuration for XXX XXX" (J_1IG_MSGS065 ) error in app Re-distribute and Create ISD Invoices(J1IG_ISDN)