How To Fix MDM_GX_MSG021 - Maintain the input hierarchy list in customizing

SAP Error Message - Details

• Message type: E = Error

• Message class: MDM_GX_MSG - Message class

• Message number: 021

• Message text: Maintain the input hierarchy list in customizing

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 MDM_GX_MSG021 - Maintain the input hierarchy list in customizing ?

  The SAP error message MDM_GX_MSG021 typically indicates that there is an issue with the input hierarchy list in the Master Data Management (MDM) module. This error often arises when the system cannot find the necessary hierarchy configuration for processing a specific transaction or data entry.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Missing Hierarchy Configuration: The input hierarchy that is required for the transaction is not defined or is incomplete in the system.
  Incorrect Customizing Settings: The customizing settings for the hierarchy might not be properly maintained, leading to the system being unable to retrieve the necessary hierarchy data.
  Data Inconsistencies: There may be inconsistencies or errors in the data that are preventing the hierarchy from being recognized.
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Check Hierarchy Configuration:
  
  Go to the customizing settings in SAP (transaction code SPRO).
  Navigate to the relevant section for maintaining the input hierarchy list.
  Ensure that the required hierarchy is defined and correctly configured.
  
  
  
  Maintain Input Hierarchy:
  
  In the customizing settings, look for the option to maintain the input hierarchy list.
  Add or modify the hierarchy entries as necessary to ensure that they align with the requirements of your transactions.
  
  
  
  Validate Data:
  
  Check the data being processed to ensure that it conforms to the expected formats and values.
  Look for any inconsistencies or missing entries that might be causing the issue.
  
  
  
  Test the Configuration:
  
  After making changes, test the configuration by attempting to perform the transaction again to see if the error persists.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on maintaining hierarchies in your version of MDM.
  
  
  
  Seek Support:
  
  If the issue persists after following the above steps, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SPRO (Customizing), MDM-related transactions, and any specific codes related to hierarchy maintenance.
  SAP Notes: Check for any SAP Notes related to MDM and hierarchy issues that might provide additional insights or patches.
  User Forums: Engage with 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 address the MDM_GX_MSG021 error effectively.