Unit & has not been maintained in the unit table

What causes this issue?

The unit of measure does not exist in table T006_OIB.

System Response

The system stops processing.

How to fix this error?

Check that the unit exists in table T006. If T006 contains the unit of
measure, run report ROIBXUOM_R3E to synchronize T006_OIB with T006.
After running the report, check the IS-Oil specific fields using
transaction CUNI (temperature/pressure specifications).

Procedure for System Administrators

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.