How To Fix CP311 - Task list &1 sequence &2 is used as a ref. sequence by another sequence

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 311

• Message text: Task list &1 sequence &2 is used as a ref. sequence by another sequence

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CP311 - Task list &1 sequence &2 is used as a ref. sequence by another sequence ?

  The SAP error message CP311 indicates that a task list (or routing) is being referenced by another sequence, which prevents you from making certain changes or deletions to the task list. This is a common issue in SAP when dealing with production planning and control, particularly in the context of task lists and sequences.
  
  Cause:
  The error occurs when:
  
  You are trying to delete or modify a task list (routing) that is currently being used as a reference in another sequence.
  The system enforces referential integrity, meaning that it does not allow changes to objects that are still in use by other objects.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify the Reference: 
  
  Use transaction code CP03 (Display Task List) or CA03 (Display Routing) to check where the task list is being referenced.
  Look for the sequences that are using the task list in question.
  
  
  
  Remove the Reference:
  
  If you need to delete or modify the