# Fishbowl: UOM conversion results in non-whole BOM quantity

> A UOM conversion cannot be created because converting quantities in an existing Bill of Materials would result in a fractional number.

## What it means
When you try to create a UOM conversion, Fishbowl validates that any existing Bills of Materials currently using the original UOM would result in whole-number quantities after the conversion is applied. If the mathematics would produce a fraction (like 1.5 or 3.67), the system rejects the conversion.

## What to check
- Identify which BOM(s) currently use the original UOM of this conversion attempt.
- Verify the conversion ratio you're proposing: does it divide evenly into those current BOM quantities?
- If the math doesn't work out, either adjust the affected BOM quantities to compatible numbers, or reconsider the conversion ratio so all results are whole numbers.

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*From Israel Lopez Consulting (ILC). Custom Fishbowl Inventory integrations and software, and Fishbowl experts since 2015. Written by Israel Lopez. Questions about this topic, or want to reach the people who wrote it? Visit https://israellopezconsulting.com/contact*