How To Fix M3645 - No task list exists

SAP Error Message - Details

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 645

• Message text: No task list exists

What causes this issue?

No task list exists for this material. This may be
because you are in the process of creating the material master record
or
because you have not yet created a task list for this material in the
system

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M3645 - No task list exists ?

  The SAP error message M3645 ("No task list exists") typically occurs in the context of production planning and control, particularly when dealing with production orders or process orders. This error indicates that the system cannot find a task list for the material or operation you are trying to work with.
  Causes:
  
  Missing Task List: The most common cause is that there is no task list defined for the material or operation in question.
  Incorrect Material Master Data: The material master may not be set up correctly, or the relevant views (like the Work Scheduling view) may not be maintained.
  Task List Type: The task list type you are trying to use may not be available or may not be correctly assigned to the material.
  Plant-Specific Issues: The task list may exist, but it might not be assigned to the specific plant you are working with.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to view or access the task list.
  
  Solutions:
  
  
  Create or Maintain Task List:
  
  Go to the appropriate transaction (e.g., CA01 for creating a routing) and create a new task list for the material.
  Ensure that the task list is correctly assigned to the relevant material and plant.
  
  
  
  Check Material Master Data:
  
  Use transaction MM03 to view the material master data and ensure that the Work Scheduling view is properly maintained.
  Verify that the task list type is correctly assigned.
  
  
  
  Check Task List Assignment:
  
  Ensure that the task list is assigned to the correct plant and that it is active.
  Use transaction CA03 to display the task list and confirm its details.
  
  
  
  Review Authorization:
  
  Check if the user has the necessary authorizations to access the task list. This may involve consulting with your SAP security team.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files for additional context on task lists and their configuration.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  CA01: Create Routing
  CA02: Change Routing
  CA03: Display Routing
  MM03: Display Material Master
  
  
  Task List Types: Familiarize yourself with different task list types (e.g., routings, recipes) and their purposes.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to task lists and error M3645.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP community forums for further assistance.