The linear measuring point category cannot be changed to non-linear

What causes this issue?

You cannot change a measuring point category from linear to non-linear
as long as measurement documents exist in the system for the selected
measuring point.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.