Error Message:
“Bank details have not been entered, payment method C cannot be used”.
Analysis and Diagnosis:
The above error message have occured during posting of payment to vendor through transaction F-58. The payment method entered is C (check payment).
Bank details have not been entered for the business partner, so the selected payment method C cannot be used (the payment method requires bank details specifications).
Solution and Procedure:
The set-up of payment method C in the configuration requires Bank Details in the master record of vendor as shown in this screenshot:

To resolve the error message without modifying the current set-up of payment method C, you should include the bank details in the master data of your vendor. Follow this procedure:
Path: SAP Easy Access → Accounting → Financial Accounting → Accounts Payable → Master Records → Change.
Transaction Code: FK02

After saving the update of vendor master record, try to post payment through F-58 with payment method C. The error message “Bank details have not been entered, payment method C cannot be used” should not appear anymore.