How To Fix CP436 - The operation has been referenced. You cannot change the data

SAP Error Message - Details

• Message type: E = Error

• Message class: CP - Task list messages: Core data

• Message number: 436

• Message text: The operation has been referenced. You cannot change the data

What causes this issue?

The operation for which you want to calculate standard values is
referenced from a reference operation set. You cannot calculate
standard values for referenced operations.

How to fix this error?

To calculate standard values for a referenced operation, proceed as
follows:
Call up the reference operation set for maintenance and calculate the
standard values there or
unlock the referenced operation set.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CP436 - The operation has been referenced. You cannot change the data ?

  The SAP error message CP436 ("The operation has been referenced. You cannot change the data") typically occurs in the context of production planning or order management when you attempt to modify data related to a production order, process order, or similar entity that has already been referenced or used in subsequent operations.
  Cause:
  
  Referenced Data: The primary cause of this error is that the data you are trying to change has already been referenced in another transaction or process. For example, if a production order has been released and is being processed, you cannot change certain fields (like the order quantity, material, etc.) because it would affect the integrity of the data in the system.
  Status of the Order: The order might be in a status that does not allow changes. For instance, if the order is already confirmed or completed, certain fields become locked for editing.
  Dependencies: There may be dependencies on the data you are trying to change, such as linked documents or processes that rely on the current state of the order.
  
  Solution:
  
  Check Order Status: Verify the status of the order or operation you are trying to change. If it is in a status that does not allow changes, you may need to revert it to a previous status (if possible) or create a new order.
  Review References: Identify any references to the order or operation. This could include linked production orders, purchase orders, or other documents. You may need to adjust or cancel these references before making changes.
  Use Change Documents: If you need to make changes, consider using change documents or creating a new version of the order instead of modifying the existing one.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on what can and cannot be changed for the type of order you are working with.
  Authorization: Ensure that you have the necessary authorizations to make changes to the order. Sometimes, restrictions are in place based on user roles.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO02 (Change Production Order), CO03 (Display Production Order), or others related to your specific context.
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to error CP436.
  Support: If the issue persists and you cannot find a resolution, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  By following these steps, you should be able to address the CP436 error and understand the limitations on changing referenced data in SAP.