How To Fix CM401 - No operation selected

CM401 - Overview

• Message type: E = Error

• Message class: CM - Task list messages: Material component allocations

• Message number: 401

• Message text: No operation selected

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Error message extract from SAP system. Copyright SAP SE.

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• What is the cause and solution for SAP error message CM401 - No operation selected ?

  The SAP error message CM401 "No operation selected" typically occurs in the context of production planning or when working with production orders, particularly in the context of capacity planning or scheduling. This error indicates that the system could not find any operations to process for the selected production order or task.
  Causes:
  
  No Operations Defined: The production order may not have any operations defined. This can happen if the order was created incorrectly or if the routing is not properly assigned.
  Routing Issues: The routing associated with the production order may not have any valid operations or may not be correctly linked to the order.
  Status of the Order: The production order might be in a status that does not allow operations to be selected (e.g., it might be closed or technically completed).
  Selection Criteria: The selection criteria used in the transaction may not match any available operations, leading to this error.
  Capacity Planning Settings: If