The data will be displayed in the base unit of measure

What causes this issue?

You wanted to display stocks in a unit of measure that is not allowed
for this material.

System Response

The system has determined the values in the base unit of
measure.

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.

Error message extract from SAP system. Copyright SAP SE.