How To Fix WS023 - Settlement document type & is not of category '&' or '&'

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 023

• Message text: Settlement document type & is not of category '&' or '&'

What causes this issue?

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

System Response

The system does not permit further processing of the document.

How to fix this error?

You have the following options:
Assign settlement document category &V2& or &V3& to the settlement
document type &V1&.
Change the assignment of settlement document type &V1& for the reversal
document to settlement document type &V4& in Customizing.

Error message extract from SAP system. Copyright SAP SE.