3711871 - Error "Revision number in the document text must contain only digits" during Credit Memo cancellation

When cancelling a Credit Memo using the Cancel Billing Document activity, the following error message is raised and the cancellation cannot be completed:

Revision number in the document text must contain only digits (FIRUVAT 152)

SAP S/4HANA Cloud Public Edition 2602

1. Open the Manage Billing Documents app.
2. Click the document number of the relevant Credit Memo and choose Change Billing Documents. 
   
3. Navigate to Menu → Billing Document → Cancel Billing Document. 
   
4. On the Cancel Billing Document tab, choose Execute. 
   

Result:
The error “Revision number in the document text must contain only digits” (FIRUVAT 152) is raised and the Credit Memo cannot be cancelled.

This issue is caused by a newly introduced coding problem.
The validation check that raises the error is intended to be relevant only for Russian financials, but it is currently executed for all Credit Memo postings, regardless of localization.

The issue will be corrected with Hotfix 4, which is planned to be available on 2026-02-15.

Until the correction is delivered, use the following workaround:

1. Open the Manage Billing Documents app.
2. Open the Credit Memo by clicking on its entry.
   
3. Cancel the Credit Memo directly from the opened document screen. 
   

Result:
The Credit Memo is cancelled successfully.

Reverse , KBA , FI-LOC-FI-RU , Russia , Known Error