Solution : https://service.sap.com/sap/support/notes/1264550 (SAP Service marketplace login required)
Key words :
relevant external processing profile, order unit yz incompatible, base unit xy, order unit proposed, relevant program corrections, bapi bapi_alm_order_maintain reacts, fm me_check_source_of_supply_1 reason, order unit, bapi bapi_alm_order_maintain, external operation
Related Notes :
| 1102482 | BAPI: Dump when trying to change an operation in PM/CS order |