SAP Message 64654 - Account determination: Error when replacing account symbols for &1 &2

Diagnosis
Account determination:
An error occurred for account assignment reference &V3& when replacingthe account symbols in the posting specifications for flow type &V1&and payment activity indicator &V2&.

System Response
The posting activity is cancelled.

Procedure
Check the account determination for the flow type concerned inCustomizing.

90044Posting to customer a/c: application & Customizing