How To Fix ME662 - You can no longer change the system for planning and SA release creation

ME662 - Overview

• Message type: E = Error

• Message class: ME - Purchasing: General Messages

• Message number: 662

• Message text: You can no longer change the system for planning and SA release creation

What causes this issue?

You wish to switch the system for planning and SA release creation (
<LS>Ext. Planning</>).
This is not possible because delivery schedule lines already exist for
this scheduling agreement.

System Response

You can only switch between planning and SA release creation in the
standard and APO systems as long as no schedule lines have yet been
created.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ME662 - You can no longer change the system for planning and SA release creation ?

  The SAP error message ME662, which states "You can no longer change the system for planning and SA release creation," typically occurs in the context of the SAP Materials Management (MM) module, particularly when dealing with scheduling agreements (SA) and planning.
  
  Cause:
  This error usually arises due to one of the following reasons:
  
  
  Release Strategy: The scheduling agreement has been released, and any changes to the planning or release creation are restricted. Once a scheduling agreement is released, it is locked for further changes to ensure data integrity.
  
  
  Status of the Scheduling Agreement: The scheduling agreement may have a status that prevents changes. For example, if it is in a completed or closed status, modifications will not be allowed.
  
  
  Time Constraints: There may be time constraints set in the system that prevent changes after a certain date or period.
  
  
  Authorization Issues: The user may not have the necessary authorizations to make changes to the scheduling agreement.
  
  
  
  Solution:
  To