How To Fix LK042 - TO item & & is not allowed for link to sub-system

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 042

• Message text: TO item & & is not allowed for link to sub-system

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LK042 - TO item & & is not allowed for link to sub-system ?

  The SAP error message LK042 indicates that there is an issue with a specific line item in a document that is linked to a sub-system. This error typically arises in the context of logistics and inventory management, particularly when dealing with transfer orders or stock movements.
  Cause:
  The error message "LK042 TO item & & is not allowed for link to sub-system" usually occurs due to one or more of the following reasons:
  
  
  Configuration Issues: The system may not be properly configured to allow the transfer order (TO) item to link with the specified sub-system. This could be due to settings in the material master, plant settings, or configuration of the sub-system itself.
  
  
  Incompatible Material Types: The material type associated with the TO item may not be compatible with the sub-system. For example, certain materials may be restricted from being processed in specific sub-systems.
  
  
  Missing Authorizations: The user may not have the necessary authorizations to perform actions related to the sub-system or the specific TO item.
  
  
  Data Inconsistencies: There may be inconsistencies in the data related to the transfer order, such as incorrect item categories or missing information.
  
  
  Solution:
  To resolve the LK042 error, you can take the following steps:
  
  
  Check Configuration: Review the configuration settings for the sub-system and ensure that the transfer order items are allowed to link with it. This may involve checking the settings in the material master and the relevant customizing settings in SPRO.
  
  
  Verify Material Types: Ensure that the material types associated with the TO items are compatible with the sub-system. If necessary, update the material master records.
  
  
  Review Authorizations: Check the user authorizations to ensure that the user has the necessary permissions to perform actions related to the sub-system and the transfer order.
  
  
  Data Validation: Validate the data in the transfer order. Ensure that all required fields are filled out correctly and that there are no inconsistencies.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance related to the error message and the context in which it occurs.
  
  
  Contact Support: If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting with SAP support for further assistance.
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes such as LT03 (Create Transfer Order), LT12 (Confirm Transfer Order), or MB1B (Transfer Posting) to manage transfer orders.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  User Forums: Consider visiting SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the LK042 error and implement a suitable solution.