SAP Message >1683 - | Error in &1: Items exist for dunning procedure and collection

Diagnosis
In the function module, the items or dunning items have inconsistentdunning notices. Some of the items are preselected for dunning bydunning procedure, the other part is preselected for dunning bycollection strategy. This constellation is not permitted in the functionmodule.

Procedure
Check whether a customer-specific event is responsible for thisinconsistency.
If you are sure that customer-specific definitions are not the cause ofthe problem, send a customer message to SAP.