How To Fix MH421 - Error in accessing MLAN data of Material &1.

SAP Error Message - Details

• Message type: E = Error

• Message class: MH - Maintain Material Master Data (Retail)

• Message number: 421

• Message text: Error in accessing MLAN data of Material &1.

Self-Explanatory Message

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MH421 - Error in accessing MLAN data of Material &1. ?

  The SAP error message MH421, which states "Error in accessing MLAN data of Material &1," typically occurs when there is an issue with the material master data, specifically related to the MLAN (Material Master - Sales Organization Data) view. This error can arise due to various reasons, including missing data, incorrect configuration, or issues with the material master record itself.
  Causes:
  
  Missing MLAN Data: The material may not have been properly set up in the MLAN view, which contains sales organization data.
  Incorrect Material Number: The material number referenced in the error message may not exist or may have been deleted.
  Authorization Issues: The user may not have the necessary authorizations to access the MLAN data for the specified material.
  Data Corruption: There may be corruption in the database or inconsistencies in the material master data.
  Configuration Issues: There may be issues with the configuration of the material master or the sales organization settings.
  
  Solutions:
  
  
  Check Material Master Data:
  
  Go to transaction MM03 (Display Material) and enter the material number to check if the MLAN view is maintained.
  If the MLAN view is missing, you may need to create or update the material using transaction MM01 (Create Material) or MM02 (Change Material).
  
  
  
  Verify Material Number:
  
  Ensure that the material number referenced in the error message is correct and exists in the system.
  
  
  
  Check Authorizations:
  
  Verify that the user has the necessary authorizations to access the material master data. This can be checked with the help of your SAP security team.
  
  
  
  Data Consistency Check:
  
  Run a consistency check on the material master data to identify any inconsistencies or corruption. This can be done using transaction MM02 or by using specific reports for data consistency.
  
  
  
  Review Configuration:
  
  Check the configuration settings for the material master and sales organization to ensure they are set up correctly. This may involve reviewing the settings in the SPRO (SAP Project Reference Object) configuration.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  MM01: Create Material
  MM02: Change Material
  MM03: Display Material
  MMBE: Stock Overview
  MM17: Mass Maintenance of Material Master
  
  
  
  SAP Documentation: Refer to the official SAP documentation for material master data management for more detailed information on maintaining MLAN data.
  
  
  Support: If the issue persists after trying the above solutions, consider reaching out to your SAP support team or consulting with SAP support for further assistance.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the MH421 error in SAP.