How To Fix CO066 - Operation & is reference operation of sequence & (deletion not possible)

SAP Error Message - Details

• Message type: E = Error

• Message class: CO - PPC order processing messages

• Message number: 066

• Message text: Operation & is reference operation of sequence & (deletion not possible)

What causes this issue?

You want to delete an operation. The operation is, however, defined as
a branch operation or return operation for sequence &V2&.

How to fix this error?

Enter a different operation as the branch or return operation of
sequence &V2&. Operation &V1& is then no longer a reference operation
and can be deleted.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CO066 - Operation & is reference operation of sequence & (deletion not possible) ?

  The SAP error message CO066 indicates that you are trying to delete an operation in a routing or production order that is a reference operation for another operation or sequence. This means that the operation you are attempting to delete is being used as a reference for other operations, and therefore, SAP does not allow its deletion to maintain data integrity.
  Cause:
  
  Reference Operation: The operation you are trying to delete is being referenced by another operation in the same routing or production order.
  Dependencies: There may be dependencies or links to other operations that prevent deletion.
  Routing Structure: The routing structure may be designed in such a way that certain operations are critical for the overall process.
  
  Solution:
  
  Check References: Identify which operations are referencing the operation you want to delete. You can do this by reviewing the routing or production order in the SAP system.
  Remove References: If possible, remove the references to the operation you want to delete. This may involve changing the sequence of operations or modifying the routing.
  Use Alternative Methods: If the operation cannot be deleted due to its importance, consider marking it as inactive or adjusting its parameters instead of deleting it.
  Consult Documentation: Review the SAP documentation or help files for more information on managing operations in routings and production orders.
  Seek Help from SAP Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like CA01 (Create Routing), CA02 (Change Routing), or CO02 (Change Production Order) to manage routings and operations.
  Routing Management: Understanding how routings and operations are structured in SAP can help prevent such issues in the future.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to routing and operation management.
  
  By following these steps, you should be able to resolve the CO066 error and manage your operations effectively within SAP.