Data model &1: Search help for (hierarchy) attribute &2 is not unique

What causes this issue?

Attributes and hierarchy attributes with the same name must reference
the same search help for all entity types.

System Response

The data model cannot be saved.

How to fix this error?

Adjust the names of the (hierarchy) attributes or specify the same
search help for the (hierarchy) attributes.

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.