Unit of measurement &1 of output profile &2 is incorrect

What causes this issue?

Unit of measurement &V1& of output profile &V2& does not match the unit
of measurement of output profile &V3&. All output profiles of a profile
value category must be identical.

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?

INCLUDE ISU_KORR OBJECT DOKU ID TX

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.