How To Fix RTCMMD021 - Error in the hierarchy structure

SAP Error Message - Details

• Message type: E = Error

• Message class: RTCMMD - Article Hierarchy

• Message number: 021

• Message text: Error in the hierarchy structure

What causes this issue?

An error occurred when reading the hierarchy data from the database and
caused the program to terminate. The cause could be that a hierarchy
data record has not been maintained completely, for example (missing
entry for top node in the material hierarchy).

System Response

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

How to fix this error?

Check the affected data records in the corresponding database tables.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RTCMMD021 - Error in the hierarchy structure ?

  The SAP error message RTCMMD021, which indicates "Error in the hierarchy structure," typically arises in the context of Master Data Management (MDM) or when dealing with hierarchical data structures in SAP. This error can occur for various reasons, including issues with the hierarchy configuration, data inconsistencies, or problems with the way the hierarchy is being processed.
  Causes of RTCMMD021
  
  Incorrect Hierarchy Configuration: The hierarchy may not be set up correctly, leading to inconsistencies in parent-child relationships.
  Missing Nodes: There may be missing nodes or levels in the hierarchy that are required for proper structure.
  Data Inconsistencies: The data being processed may have inconsistencies, such as duplicate entries or invalid references.
  Improper Data Input: The data being uploaded or processed may not conform to the expected format or structure.
  Authorization Issues: Sometimes, the user may not have the necessary permissions to access or modify the hierarchy.
  
  Solutions to RTCMMD021
  
  
  Check Hierarchy Configuration:
  
  Review the hierarchy settings in the relevant transaction (e.g., transaction code for maintaining hierarchies).
  Ensure that all parent-child relationships are correctly defined.
  
  
  
  Validate Data:
  
  Check the data being processed for any inconsistencies or errors.
  Ensure that all required nodes are present and correctly linked.
  
  
  
  Correct Data Input:
  
  If you are uploading data, ensure that the file format and structure match the expected input format.
  Validate the data before uploading to catch any potential issues.
  
  
  
  Review Authorizations:
  
  Ensure that the user has the necessary permissions to access and modify the hierarchy.
  Check the role assignments and authorizations in the user profile.
  
  
  
  Use Transaction Codes for Analysis:
  
  Utilize relevant transaction codes (like SE11, SE16, or SE80) to analyze the data structures and hierarchy definitions.
  Use ST22 or SM21 to check for any system logs that might provide additional context on the error.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on hierarchy management and troubleshooting.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information
  
  Transaction Codes: Familiarize yourself with relevant transaction codes for managing hierarchies, such as RSCUSTV0 for customizing settings.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Community Forums: Engage with SAP community forums or user groups for shared experiences and solutions from other users who may have encountered the same error.
  
  By following these steps, you should be able to identify and resolve the cause of the RTCMMD021 error in your SAP environment.