How To Fix LATP100 - Change ATP confirmation only after check in the same transaction

SAP Error Message - Details

• Message type: E = Error

• Message class: LATP - Messages for Package LATP

• Message number: 100

• Message text: Change ATP confirmation only after check in the same transaction

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LATP100 - Change ATP confirmation only after check in the same transaction ?

  The SAP error message LATP100 ("Change ATP confirmation only after check in the same transaction") typically occurs in the context of Advanced Available-to-Promise (ATP) checks in SAP. This error indicates that there is an attempt to change an ATP confirmation after the ATP check has already been performed in the same transaction. 
  Cause:
  
  ATP Check Sequence: The ATP check is designed to ensure that stock availability is confirmed before any changes are made to the confirmation. If the system has already performed an ATP check, it expects that any changes to the confirmation should be done in a separate transaction.
  Transaction Logic: The logic of the transaction does not allow for modifications to the ATP confirmation once the check has been executed. This is to maintain data integrity and ensure that the availability status is accurate.
  
  Solution:
  
  Separate Transactions: If you need to change the ATP confirmation, you should first complete the current transaction and then start a new transaction to make the necessary changes.
  Re-execute ATP Check: If you need to change the confirmation, you may need to re-execute the ATP check after making the changes. This can be done by navigating back to the relevant transaction and performing the ATP check again.
  Review Custom Logic: If there are custom developments or enhancements in your SAP system that might be affecting the ATP process, review those to ensure they are not causing the issue.
  Consult Documentation: Check SAP documentation or notes related to ATP and the specific transaction you are working with for any additional guidance or updates.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO09 (Availability Overview) or MD04 (Stock/Requirements List) to analyze stock levels and ATP confirmations.
  SAP Notes: Look for SAP Notes that might address this specific error or provide additional context on ATP processing.
  User Training: Ensure that users are trained on the correct sequence of operations when dealing with ATP confirmations to avoid this error in the future.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant who can provide deeper insights into the specific configuration and customizations of your SAP environment.