SAP Message 67_LOAN504 - Acct assignm. ref. &3 of loan &1 / &2 is not assigned to a bal.sheet item

Diagnosis
On this balance sheet key date, loan &v1& / &v2& has account assignmentreference &v3&. However, you have not assigned the account assignmentreference to a balance sheet item in company code &v1&.

System Response
The system is unable to evaluate the loan.

Procedure
Assign account assignment reference &v3& in company code &v1& to abalance sheet item in the selection screen for the report.