How To Fix CR335 - Reference to a shift definition: you cannot change

CR335 - Overview

• Message type: E = Error

• Message class: CR - (1,099) Work Center; (100,200) Capacity

• Message number: 335

• Message text: Reference to a shift definition: you cannot change

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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CR335 - Details

• The SAP error message CR335, which states "Reference to a shift definition: you cannot change," typically occurs in the context of shift planning or work schedule management within the SAP system. This error indicates that you are trying to modify a shift definition that is already in use or has been referenced in other configurations, making it immutable.
  
  Cause:
  
  Shift Definition in Use: The shift definition you are trying to change is currently assigned to one or more employees, work schedules, or other planning elements.
  Locked Configuration: The shift definition may be locked due to ongoing processes or configurations that prevent changes.
  Authorization Issues: You may not have the necessary permissions to modify the shift definition.
  
  
  Solution:
  
  
  Check Assignments: Review the assignments of the shift definition. If it is assigned to employees or work schedules, you will need to remove those assignments before making changes.
  
  Navigate to the relevant transaction (e.g., PT01 for shift planning) and check