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.