No subsequent business volume (documents) exists for document type &2

What causes this issue?

Translation: &V3& = purchasing documents, supplier billing documents or
settlement documents
For arrangement &V1&, there are no documents of category &V2& (&V3&)
that are to be checked with respect to the subsequent compilation of
statistics.
If you want to carry out recompilation of statistics for an arrangement,
the subsequent business volumes are determined and possibly also updated
in addition to the old documents.

How to fix this error?

Please look into this matter.
In the case of arrangements for which subsequent compilation of business
volume is not defined (see e.g. indicator in supplier master for
condition granter), this message is of no significance.

Procedure for System Administrators

In Customizing, you can define that you do not use this document
category at all, or do not use it with subsequent business volume
update.
In this case, the program does not check the document category (improves
performance). In addition, this message is no longer issued.

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

<DS:TRAN.WMN9>Set Up Control Table for Subsequent Settlement</>

Error message extract from SAP system. Copyright SAP SE.