Inconsistent unit of measurement for profile values

What causes this issue?

Different units of measure - &v2& and &v3& - appear in the profile
values that you attempted to transfer to profile &v1&.
The identical unit of measure must be used for all profile values in
order to enable their transfer.

System Response

INCLUDE ISU_VERARB OBJECT DOKU ID TX

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.