Enter a unit of measurement

What causes this issue?

You have linked the master inspection characteristic to a class
characteristic, for which no unit of measurement is defined.

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?

You have the following options:
Enter a unit of measurement.
Choose <LS>Cancel</> and delete the reference to the class
characteristic, if possible.

Error message extract from SAP system. Copyright SAP SE.