How To Fix MDG_MDF321 - &1 is not a valid hierarchy entry

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_MDF - Master Data: Messages

• Message number: 321

• Message text: &1 is not a valid hierarchy entry

What causes this issue?

You have added &V1& to the hierarchy. However, this assignment is not
permitted by the definition of the characteristic.

System Response

The changes are not applied.

How to fix this error?

Change the hierarchy structure accordingly.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MDG_MDF321 - &1 is not a valid hierarchy entry ?

  The SAP error message MDG_MDF321 indicates that a specific entry is not recognized as a valid hierarchy entry in the Master Data Governance (MDG) module. This error typically arises when working with hierarchical data structures, such as organizational units, product hierarchies, or other master data entities that rely on a parent-child relationship.
  Cause:
  
  Invalid Hierarchy Entry: The entry you are trying to use may not exist in the hierarchy or may have been deleted or deactivated.
  Incorrect Data Input: The data being inputted may not conform to the expected format or structure required by the hierarchy.
  Hierarchy Configuration Issues: There may be issues with the configuration of the hierarchy itself, such as missing nodes or incorrect relationships.
  Authorization Issues: The user may not have the necessary permissions to access or modify the hierarchy entries.
  
  Solution:
  
  Verify Entry Existence: Check if the entry you are trying to use actually exists in the hierarchy. You can do this by navigating to the relevant hierarchy in the MDG application.
  Check Data Input: Ensure that the data you are entering is correct and follows the required format. Look for typos or incorrect values.
  Review Hierarchy Configuration: If you have access, review the configuration of the hierarchy to ensure that all necessary nodes are present and correctly linked.
  Authorization Check: Ensure that you have the necessary authorizations to access and modify the hierarchy entries. If not, contact your system administrator to grant the required permissions.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the hierarchy structure and requirements for the data you are working with.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like MDG_MDF or MDG_HIER to access the relevant master data governance functions.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional troubleshooting steps related to this error.
  Support: If the issue persists, consider reaching out to SAP support or your internal IT support team for further assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.