How To Fix MW401 - Invalid key for item delivery phase &

SAP Error Message - Details

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 401

• Message text: Invalid key for item delivery phase &

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 MW401 - Invalid key for item delivery phase & ?

  The SAP error message MW401 "Invalid key for item delivery phase" typically occurs during the processing of delivery documents in the SAP system. This error indicates that there is an issue with the key used to identify the delivery phase of an item in the delivery document. Here are some potential causes, solutions, and related information for this error:
  Causes:
  
  Incorrect Item Status: The item may not be in a valid status for the delivery phase being processed.
  Missing or Incorrect Configuration: The delivery phase configuration in the system may be incomplete or incorrect.
  Data Inconsistencies: There may be inconsistencies in the data related to the delivery document, such as missing entries in the database tables.
  Custom Development Issues: If there are custom enhancements or modifications in the delivery process, they may be causing the error.
  Transport Issues: If the delivery phase was recently transported from a development environment to production, there may be issues with the transport.
  
  Solutions:
  
  Check Item Status: Verify the status of the item in the delivery document. Ensure that it is in a valid state for processing.
  Review Configuration: Check the configuration settings for delivery phases in the SAP system. Ensure that all necessary settings are correctly defined.
  Data Consistency Check: Run consistency checks on the delivery document and related tables to identify and correct any inconsistencies.
  Debugging: If you have access to debugging tools, you can trace the program execution to identify where the error is occurring and why the key is considered invalid.
  Consult Documentation: Review SAP documentation or notes related to the specific version of SAP you are using for any known issues or patches.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for assistance, especially if it appears to be a bug or a more complex issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as VL01N (Create Outbound Delivery), VL02N (Change Outbound Delivery), and VL03N (Display Outbound Delivery) to manage delivery documents.
  SAP Notes: Search for SAP Notes related to MW401 for any specific fixes or recommendations provided by SAP.
  User Forums: Check SAP community forums or other user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to diagnose and resolve the MW401 error in your SAP system.