How To Fix M3645 - No task list exists

M3645 - Overview

• 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