How To Fix UD128 - Start by removing the references

SAP Error Message - Details

• Message type: E = Error

• Message class: UD - EDM - Enterprise Data Model

• Message number: 128

• Message text: Start by removing the references

What causes this issue?

The object selected for deletion is still being used and cannot,
therefore, be deleted.
Entity types: Outgoing relationships, outgoing specicalizations or the
entity type are still being used in data models.
Data models: The data model is still assigned to at least one data
model or is assigned to another model as a referenced model.

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

System Response

How to fix this error?

Double click to go to the definition or hierarchy overview for the
affected objects. From there you can delete the relationships or
assignments.
Whan all references have been removed, the object is deleted.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UD128 - Start by removing the references ?

  The SAP error message UD128 ("Start by removing the references") typically occurs in the context of user-defined fields or objects in SAP, particularly when there are dependencies or references that need to be cleared before a certain action can be performed, such as deleting or modifying an object.
  Cause:
  The error usually arises when you attempt to delete or modify a user-defined object (like a field, table, or structure) that is still being referenced by other objects or processes in the system. This could include:
  
  User-defined fields that are still linked to existing data.
  Custom tables or structures that are being used in reports, programs, or other database objects.
  Dependencies in configuration settings or other user-defined elements.
  
  Solution:
  To resolve the UD128 error, you should follow these steps:
  
  
  Identify References: Use transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), or SE84 (Repository Information System) to find out where the object is being referenced. Look for:
  
  Programs
  Function modules
  Reports
  Data elements
  Domains
  
  
  
  Remove or Update References: Once you have identified the references, you will need to either:
  
  Delete the references if they are no longer needed.
  Modify the references to point to a different object if applicable.
  
  
  
  Check Custom Code: If there are custom ABAP programs or enhancements that reference the object, you may need to update or remove those references in the code.
  
  
  Transport Requests: If the object is part of a transport request, ensure that the transport is released and that there are no pending changes that could be causing the issue.
  
  
  Testing: After removing the references, test the changes to ensure that the object can now be deleted or modified without triggering the error.
  
  
  Documentation: Document any changes made for future reference and to maintain clarity in the system.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11, SE80, SE84, and SE37 (for function modules) to navigate through the SAP system effectively.
  SAP Notes: Check the SAP Support Portal for any specific notes related to the UD128 error, as there may be updates or patches that address this issue.
  System Logs: Review system logs (transaction SLG1) for additional context or related errors that may provide further insight into the problem.
  
  If you continue to experience issues after following these steps, consider reaching out to your SAP Basis or development team for further assistance.