How To Fix CI156 - Invalid task list type

SAP Error Message - Details

• Message type: E = Error

• Message class: CI - Plant maintenance task list messages

• Message number: 156

• Message text: Invalid task list type

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CI156 - Invalid task list type ?

  The SAP error message CI156 "Invalid task list type" typically occurs when there is an issue with the task list type being used in a particular transaction or process. This error can arise in various contexts, such as when working with maintenance plans, production orders, or other areas where task lists are utilized.
  Cause:
  
  Incorrect Task List Type: The task list type specified in the transaction does not exist or is not valid for the operation being performed.
  Configuration Issues: The task list type may not be properly configured in the system, or it may not be assigned to the relevant application area.
  Authorization Issues: The user may not have the necessary authorizations to access or use the specified task list type.
  Data Entry Errors: There may be a typographical error in the task list type entered by the user.
  
  Solution:
  
  Check Task List Type: Verify that the task list type you are trying to use is valid. You can do this by checking the configuration in the relevant SAP module (e.g., PM for Plant Maintenance, PP for Production Planning).
  Configuration Review: If you have access, review the configuration settings for task lists in the SAP system. Ensure that the task list type is defined and active.
  Authorization Check: Ensure that the user has the necessary authorizations to access the task list type. This may involve checking user roles and permissions.
  Correct Data Entry: Double-check the input for any typographical errors. Ensure that the task list type is entered correctly.
  Consult Documentation: Refer to SAP documentation or help resources for specific details about the task list types relevant to your process.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be using transaction codes like IA01 (Create Task List), IA02 (Change Task List), or others related to task list management.
  SAP Notes: Check for any relevant SAP Notes that may address this error or provide additional guidance.
  Support: If the issue persists, 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 identify the cause of the CI156 error and implement a solution to resolve it.