How To Fix CPCL121 - Sequence task list header invalid or not loaded

CPCL121 - Overview

• Message type: E = Error

• Message class: CPCL - Service Layer for Plans, Sequences, Operations, and Subober.

• Message number: 121

• Message text: Sequence task list header invalid or not loaded

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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Smart SAP Assistant

• What is the cause and solution for SAP error message CPCL121 - Sequence task list header invalid or not loaded ?

  The SAP error message CPCL121, which states "Sequence task list header invalid or not loaded," typically occurs in the context of using the SAP Production Planning (PP) module, particularly when dealing with task lists and production orders. This error indicates that the system is unable to find or recognize the sequence task list header that you are trying to access or use.
  Causes:
  
  Invalid Task List: The sequence task list you are trying to use may not exist or may have been deleted.
  Incorrect Configuration: The task list may not be properly configured or may not be assigned to the relevant production process.
  Authorization Issues: The user may not have the necessary authorizations to access the task list.
  Data Inconsistency: There may be inconsistencies in the database or issues with the data integrity of the task list.
  Transport Issues: If the task list was recently transported from another system, it may not have been properly imported.
  
  Solutions:
  
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