3724560 - Error SE240 when changing service PO with invoicing plan in upgraded S/4HANA environment

• When saving a changed service purchase order (PO) with invoicing plan in an upgraded S/4HANA environment, the following error message appears:
   
  Message SE240 - Combination invoicing plan + service-based IV + ERS not allowed
   
• The GR-based IV and Service-based IV flags are auto-populated from the vendor master and are non-editable, causing validation failure.

• SAP S/4HANA
• SAP S/4HANA Cloud Private Edition
• Materials Management (MM)

SE240, error message, purchase order, invoicing plan, GR-based IV, service-based IV, GR-Bsd IV, S.-Based IV, vendor master, S/4HANA 2023, upgraded environment, EKPO table, PRODUCTTYPE field, stricter validations, correction report, SAP S/4HANA, Sourcing and Procurement, product type group error, contract, EBAN-PRODUCTTYPE, EKPO-PRODUCTTYP, ZSRV_PRODUCTTYPE_RESET.txt.  , KBA , MM-SRV-GF-INC , Inconsistencies in External Service Procurement , MM-SRV-IP , Invoicing Plan , Problem