How To Fix MH422 - Error in determining the reference plant for plant &1.

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 422

• Message text: Error in determining the reference plant for plant &1.

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message MH422 - Error in determining the reference plant for plant &1. ?

  The SAP error message MH422, which states "Error in determining the reference plant for plant &1," typically occurs in the context of material management or production planning when the system is unable to identify a reference plant for the specified plant. This can happen during various processes, such as creating or changing material master records, or during planning activities.
  Causes:
  
  Missing Configuration: The reference plant may not be configured in the system for the specified plant. This can happen if the plant is newly created or if there are changes in the organizational structure.
  Incorrect Plant Assignment: The plant may not be correctly assigned in the configuration settings, leading to the inability to determine a reference plant.
  Data Inconsistencies: There may be inconsistencies or missing data in the material master or plant master records.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access the required data for the reference plant.
  
  Solutions:
  
  
  Check Plant Configuration:
  
  Go to the configuration settings in SAP (Transaction SPRO) and verify the settings for the plant in question. Ensure that the reference plant is correctly defined.
  Navigate to Logistics > General > Master Data > Material Master > Settings for Key Fields > Define Reference Plant and check if the reference plant is set up correctly.
  
  
  
  Review Material Master Data:
  
  Use transaction MM03 to display the material master data for the material in question. Check if the plant data is complete and correctly maintained.
  Ensure that the relevant views (e.g., Basic Data, Purchasing, MRP) are properly filled out.
  
  
  
  Check for Missing Entries:
  
  If the reference plant is supposed to be derived from a specific configuration, ensure that all necessary entries exist in the relevant tables (e.g., T001W for plant data).
  
  
  
  Authorization Check:
  
  Ensure that the user has the necessary authorizations to access the plant and material data. This can be checked with the help of your SAP security team.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that might address this specific error message. There may be patches or updates that resolve known issues.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the process to identify where the reference plant determination is failing. This may require assistance from a technical consultant.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  MM01 (Create Material), MM02 (Change Material), MM03 (Display Material), SPRO (Configuration).
  
  
  Tables:
  
  T001W (Plant Data), MARC (Plant Data for Material), T001 (Company Codes).
  
  
  SAP Documentation: Refer to SAP Help documentation for detailed information on material master and plant configuration.
  
  If the issue continues after following these steps, it may be beneficial to engage with SAP support or a consultant who specializes in SAP MM or PP modules for further assistance.