How To Fix NAA639 - Posting/billing date &1 was adopted as update date

NAA639 - Overview

• Message type: E = Error

• Message class: NAA - Subsequent settlement (Purchasing)

• Message number: 639

• Message text: Posting/billing date &1 was adopted as update date

What causes this issue?

The posting/billing date &V1& was adopted as the update date.

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?

The posting date (billing date) of the Settlement Management document 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.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

NAA639 - Details

• The SAP error message NAA639 indicates that the posting or billing date you are trying to use has been adopted as the update date. This typically occurs in the context of billing documents or financial postings where the system is enforcing certain rules regarding dates.
  
  Cause:
  
  Date Validation Rules: The system has specific rules that determine which dates can be used for posting or billing. If the posting date is outside of the allowed range (for example, if it is in a closed period), the system may automatically adjust it to the update date.
  Period Closing: If the posting date falls within a closed financial period, the system will not allow postings to that date and will revert to the current date or the update date.
  Configuration Settings: There may be configuration settings in the financial module that dictate how dates are handled during postings.
  
  
  Solution:
  
  Check Posting Date: Verify the posting or billing date you