SAP Function Module search on GM_GM
Search FMs
GM_GMDERIVE_CALL_CUSTOMER_EXIT - CALL GMDERIVE USER-EXIT
GM_GMDERIVE_FILL_CUSTOMER_EXIT - Copy additional fields from COBL into GMDERIVE
GM_GMIA_BILLING_STATUS_UPDATE - UPDATE BILLING STATUS in GMIA
GM_GMIA_CHECK_DATA - Check required fields for creating new GMIA records
GM_GMIA_LINE_UPDATE - Update details on GMIA lines
Return Table index