How To Fix P2535 - Completion confirmations already created, change of session not possible

P2535 - Overview

• Message type: E = Error

• Message class: P2 - Messages for HR Time Management

• Message number: 535

• Message text: Completion confirmations already created, change of session not possible

What causes this issue?

You wish to change from create mode to cancel mode. You have already
created order completion confirmations in create mode.

System Response

It is not possible to change mode.

How to fix this error?

Save the order completion confirmations which you have already created.

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.

P2535 - Details

• The SAP error message P2535 ("Completion confirmations already created, change of session not possible") typically occurs in the context of production order processing, particularly when dealing with confirmations in the Production Planning (PP) module. This error indicates that there are already completion confirmations recorded for a production order, and as a result, the system does not allow changes to the session or the order.
  
  Cause:
  
  Existing Confirmations: The primary cause of this error is that completion confirmations have already been entered for the production order. This means that the system has already recorded the output for the order, and any attempt to change the session or the order is restricted to maintain data integrity.
  Session Management: The error can also arise if there is an attempt to change the session in which confirmations are being processed while confirmations are still active or have been finalized.
  
  
  Solution:
  
  Review Confirmations: Check the production order to see the