Get PO Number for B2B Order from the API

[maxezcsv]

Shopify has added the option to add a PO Number to Orders and Draft orders:
https://changelog.shopify.com/posts/enter-po-numbers-on-b2b-orders

We don't see any details on how to get this field for an Order from the REST or GraphQL API when getting a specific order or list of orders. Is there a way to get the PO Number for an order via API call?

[maxezcsv · Accepted solution]

Just going to post my own reply. It's currently in the Unstable version of the REST API on the Order object: https://shopify.dev/docs/api/admin-rest/unstable/resources/order#resource-object

[jaacse]

What about in graphql?