Why does Fishbowl say "Cannot delete a read only UOM."?

That Unit of Measure is marked read-only and cannot be deleted. Fishbowl typically protects system-provided units or locked UOMs to prevent accidental changes.

Fishbowl: Cannot delete read-only UOM — Israel Lopez Consulting

What it means

The UOM you tried to delete is protected from modification—Fishbowl has marked it as read-only. This usually happens with system-provided units (like “each” or “box”) or when someone has intentionally locked the UOM to prevent changes.

What to check

Whether this is a system-provided UOM—these cannot be deleted in Fishbowl
Whether the UOM shows a protected or read-only status in its configuration
Whether your user role has permissions to create or modify Units of Measure settings