How To Fix LT138 - Masked movement type only possible for differences and transact.key 001

SAP Error Message - Details

• Message type: E = Error

• Message class: LT - LE-WM: View or Table Maintenance Error Messages

• Message number: 138

• Message text: Masked movement type only possible for differences and transact.key 001

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LT138 - Masked movement type only possible for differences and transact.key 001 ?

  The SAP error message LT138, which states "Masked movement type only possible for differences and transact.key 001," typically occurs in the context of warehouse management and inventory movements. This error is related to the use of movement types that are restricted to specific scenarios, particularly when dealing with differences in inventory.
  Cause:
  
  Movement Type Restrictions: The error indicates that the movement type you are trying to use is masked or restricted and can only be used for specific transactions, particularly for differences in inventory (like stock discrepancies).
  Transaction Key: The transaction key (001 in this case) is associated with certain types of inventory movements, and the movement type you are trying to use does not align with the expected transaction type.
  Configuration Issues: There may be configuration settings in the system that restrict the use of certain movement types under specific conditions.
  
  Solution:
  
  Check Movement Type: Verify that you are using the correct movement type for the operation you are trying to perform. If you are trying to post a difference, ensure that you are using a movement type that is allowed for that purpose.
  Review Transaction Key: Ensure that the transaction key you are using is appropriate for the movement type. If you are using a movement type that is not compatible with the transaction key, you will need to select a different movement type.
  Configuration Review: If you have access to the configuration settings, review the settings for movement types and transaction keys in the SAP system. You may need to consult with your SAP administrator or a functional consultant to adjust the configuration if necessary.
  Consult Documentation: Refer to SAP documentation or help resources for specific details on the movement types and their allowed uses. This can provide insights into which movement types are appropriate for your scenario.
  
  Related Information:
  
  Movement Types: Movement types in SAP are used to define the type of stock movement (e.g., goods receipt, goods issue, transfer postings). Each movement type has specific rules and configurations.
  Transaction Keys: Transaction keys are used in SAP to categorize different types of transactions and movements. They help in determining how the system processes the movement.
  Warehouse Management (WM): If you are working within the Warehouse Management module, ensure that you are familiar with the specific processes and configurations related to inventory management and stock movements.
  
  If the issue persists after checking the above points, it may be beneficial to engage with SAP support or your internal SAP team for further troubleshooting.