CP341 - Reference sequence for parallel sequence cannot be a parallel sequence

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 341

• Message text: Reference sequence for parallel sequence cannot be a parallel sequence

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CP341 - Reference sequence for parallel sequence cannot be a parallel sequence ?

  The SAP error message CP341, which states "Reference sequence for parallel sequence cannot be a parallel sequence," typically occurs in the context of SAP's Production Planning (PP) or Advanced Planning and Optimization (APO) modules. This error is related to the configuration of sequences in production planning, particularly when dealing with parallel sequences.
  Cause:
  The error arises when you attempt to define a parallel sequence that references another parallel sequence. In SAP, a parallel sequence is designed to execute multiple operations simultaneously, and it cannot reference another parallel sequence as its predecessor. This is because the system expects a linear sequence of operations rather than a parallel one, which can lead to ambiguity in scheduling and resource allocation.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Sequence Configuration: Check the configuration of the sequences involved. Ensure that the sequence you are trying to reference is not a parallel sequence. If it is, you will need to change it to a linear sequence or adjust your planning logic.
  
  
  Modify the Reference: If you need to maintain a parallel structure, consider restructuring your sequences. You may need to create a new linear sequence that can serve as a reference for your parallel sequence.
  
  
  Check Dependencies: Ensure that the dependencies between operations are correctly defined. If a parallel sequence is necessary, ensure that it does not reference another parallel sequence directly.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for guidance on configuring sequences in your specific version of SAP. This can provide insights into best practices and configuration options.
  
  
  Testing: After making changes, test the configuration in a development or test environment to ensure that the error is resolved and that the production planning process works as intended.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context on sequence configurations.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have implemented.
  Training and Documentation: Consider training sessions or documentation on SAP PP/APO to better understand sequence configurations and best practices.
  
  By following these steps, you should be able to resolve the CP341 error and ensure that your production planning sequences are correctly configured.