SAP Message REEXFI055 - House bank &1/&2 does not yet exist for contract &3/&4

Diagnosis
For this document from contract &V3&/&V4&, the system determined housebank account &V1&/&V2&. However, these house bank details do not existin Financial Accounting. The contract was probably not activated yet. Orthe house bank was entered manually, and this bank is not assigned tothe contract.

System Response
The system cannot post the document.

Procedure
Activate the contract. Or correct the document data and try postingagain.