How To Fix UCR0004 - Reference characteristic &1 is ambiguous

SAP Error Message - Details

• Message type: E = Error

• Message class: UCR0 - Messages for Reporting of Transaction Data

• Message number: 004

• Message text: Reference characteristic &1 is ambiguous

What causes this issue?

You have specified more than one value for reference characteristic
&V1& in the global filter or within a row/column/cell of the report of
the query. However, a unique value is required.

System Response

Processing is terminated.

How to fix this error?

Always specify reference characteristic &V1& in a unique way in the
global filter or within a row/column/cell of the query.

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.