How To Fix LK001 - No function module defined for message type &

LK001 - Overview

• Message type: E = Error

• Message class: LK - WM -> SUB connection messages

• Message number: 001

• Message text: No function module defined for message 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.

Unfortunately, there isn't any extra information in this error notice.

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LK001 - Details

• The SAP error message LK001: No function module defined for message type & typically occurs when the system is unable to find a function module associated with a specific message type in the context of the Logistics Execution (LE) module, particularly in relation to handling messages for deliveries, shipments, or other logistics processes.
  
  Cause:
  
  Missing Function Module: The primary cause of this error is that there is no function module defined for the specified message type in the system. This can happen if the message type is incorrectly configured or if the necessary function module has not been created or activated.
  
  Configuration Issues: The message type may not be properly configured in the relevant customizing settings, leading to the system being unable to link the message type to a function module.
  Transport Issues: If the system has recently undergone a transport of changes, the function module may not have been included in the transport