& is still used as the warehouse mgmt unit for material & in warehouse &

What causes this issue?

The unit of measure &V1& is still used as the <DS:GLOS.WM_unit>WM unit
</> in at least one warehouse and may not therefore be deleted.

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?

If you want to delete the unit of measure nevertheless, change the WM
unit to another unit in the warehouses concerned.

Error message extract from SAP system. Copyright SAP SE.