No credit memo document created for this condition record

What causes this issue?

No credit memo document (settlement document) was created and posted
for this condition record within the framework of settlement accounting
for the rebate arrangement.
Either an error has occurred during settlement accounting, or no credit
memo document has been created (e.g. no business volume, no rebate
income). That is to say, the condition record has merely been flagged
as "settled" ("inactive").

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check the result of the settlement accounting process. In particular,
take note of the error messages in the list log.

Error message extract from SAP system. Copyright SAP SE.