How To Fix LK003 - Transmission system not defined for link WM -> subsystem

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 003

• Message text: Transmission system not defined for link WM -> subsystem

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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Smart SAP Assistant

• What is the cause and solution for SAP error message LK003 - Transmission system not defined for link WM -> subsystem ?

  The SAP error message LK003: Transmission system not defined for link WM -> subsystem typically occurs in the context of the SAP Warehouse Management (WM) module when there is an issue with the configuration of the communication link between the WM system and the subsystem (like a third-party system or another SAP module).
  Cause:
  
  Missing Configuration: The error usually indicates that the transmission system (communication link) has not been defined in the system settings. This could be due to a missing entry in the configuration tables.
  Incorrect Settings: There may be incorrect or incomplete settings in the configuration of the communication link.
  Transport Layer Issues: If the transport layer is not properly set up, it can lead to this error.
  System Updates: Changes or updates in the system that affect the communication link may also lead to this error.
  
  Solution:
  To resolve the LK003 error, you can follow these steps:
  
  
  Check Configuration:
  
  Go to the transaction code SPRO (SAP Project Reference Object).
  Navigate to Logistics Execution -> Warehouse Management -> Interfaces -> Define Transmission System.
  Ensure that the transmission system for the link between WM and the subsystem is defined correctly.
  
  
  
  Define Transmission System:
  
  If the transmission system is not defined, you will need to create a new entry. Make sure to specify the correct parameters for the communication link.
  
  
  
  Review Settings:
  
  Check the settings for the communication link to ensure that all required fields are filled out correctly.
  Verify that the settings match the requirements of the subsystem you are trying to connect to.
  
  
  
  Check User Authorizations:
  
  Ensure that the user has the necessary authorizations to access and modify the configuration settings.
  
  
  
  Test the Connection:
  
  After making the necessary changes, test the connection to ensure that the error is resolved.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for additional guidance on configuring the transmission system.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the configuration and settings, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SPRO for configuration and SM21 for checking system logs.
  SAP Notes: Search for relevant SAP Notes that may address specific issues related to the LK003 error.
  Community Forums: Engage with SAP community forums or user groups for shared experiences and solutions from other users who may have encountered the same error.
  
  By following these steps, you should be able to identify and resolve the cause of the LK003 error in your SAP system.