External Reference exists for some payment with status as In Preparation but not for other in the same status.
SAP Business ByDesign
Reproducing the Issue
Go to Payment Management work center and view Payment Monitor.
Select to Show In Preparation Payments.
You can see External Reference is missing for some payments, but exists for others.
Initially when you execute a payment run then the proposed payments gets created in in-preparation with no external references. If
you make any changes in the payment such as Payment Method or Bank Accounts and save, the external payment ID gets updated.
But if you just update the Document Description, round trip will not be triggered, so no external payment ID does not get updated.
It is a system designed behavior
Payment External Reference; , KBA , 外部参考号 , 付款监控 , AP-PAY-BPO , Bank Payment Order , Problem