How To Fix NAA641 - Update date &1 is in a period for which settlement is already carried out

NAA641 - Overview

• Message type: E = Error

• Message class: NAA - Subsequent settlement (Purchasing)

• Message number: 641

• Message text: Update date &1 is in a period for which settlement is already carried out

What causes this issue?

Update date &V1& falls in a period (&V3& to &V4&) of arrangement &V2&
for which settlement accounting has already been performed.

System Response

The update date is changed to the start date or end date of the next
period for which settlement accounting is due.

How to fix this error?

Please note that the update date has changed, and if necessary take
account of the resulting changes to the assignment of business volume
data to a period (in the case of arrangements settled periodically).
This procedure ensures realtime settlement accounting for business
volumes.
The document date of the material document or invoice verification
document is used as the update date in the case of updating at the time
of goods receipt or invoice verification, or the delivery date of the
schedule line is used as the update date in the case of data updated
from the purchase order/delivery schedule. In the case of Settlement
Management documents (supplier billing documents and settlement
documents), the posting date (billing date) is used as the update date.
In some cases, the update date is changed to the start or end date of
the arrangement validity period if the original date is not within the
arrangement validity period (e.g. as a result of a data input error).
In the case of arrangement settled periodically, if the update date
falls in a period for which settlement accounting has already been
performed, business volumes are assigned to the next period for which
settlement accounting is due. The update date is changed accordingly.
This procedure ensures realtime inclusion of business volumes during
subsequent settlement.
For invoice verification documents entered in Release 3.0, the posting
date of the invoice verification document is used for the subsequent
update of business volume data. The "Document date" field in the PO
history is empty in the case of these documents.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

NAA641 - Details

• The SAP error message NAA641 indicates that there is an issue with the update date specified in a transaction related to settlement processes. Specifically, it means that the update date you are trying to use falls within a period for which settlement has already been completed. This typically occurs in the context of internal orders, projects, or cost centers where settlements are performed to transfer costs to other cost objects or to financial accounting.
  
  Cause:
  
  Settlement Already Completed: The most common cause of this error is that the settlement for the specified period has already been executed, and the system does not allow further updates or changes to that period.
  Incorrect Update Date: The update date you are trying to use may not align with the allowed periods for posting or settlement.
  Period Locking: The period may be locked for posting due to financial closing activities or other reasons.
  
  
  Solution:
  
  Check Settlement Status: Verify if the