Solution : https://service.sap.com/sap/support/notes/423817 (SAP Service marketplace login required)
Key words :
company code allocation/company code responsible, additional key words ec50e, customers theaccount determination id, company code, existing contract account, contract account, table tfk001b, program error, solution import, applicable aop
Related Notes :
152498 | Move-in and move-out: Prepopulating fields and checks |