there's an article for "Creating Bills from Purchase Orders" (https://central.xero.com/s/article/Creating-bills-from-purchase-orders), however I can't find endpoint for this action in accounting API (https://xeroapi.github.io/xero-node/accounting/index.html#api-Accounting).

Update the status using updatePurchaseOrder (https://xeroapi.github.io/xero-node/accounting/index.html#api-Accounting-updatePurchaseOrder) won't let user create a bill in xero by default.

Fyi, this is my case detail : (https://central.xero.com/s/case?caseId=5003m00001DLY6B)

Thanks