# Fishbowl: "Cannot update drop ship POs from sales orders"

> Fishbowl prevents modifications to drop ship purchase orders that are linked to sales orders.

## What it means
Drop ship purchase orders created from a sales order are typically protected once linked—editing is blocked to preserve the relationship and keep the orders in sync.

## What to check
- Check the PO status. Is it finalized, locked, or in a processed state?
- Verify the linked sales order is still active. A closed or archived SO may trigger stricter protections.
- See if there's an option to unlink the PO from the SO or change the relationship type if you need to modify it.

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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*