When creating a new supplier in Dext for the Zoho books integration, the VAT status needs to be set before you can publish a bill. This is because the supplier has to have a tax status applied before it will accept an bills from Dext.

Currently, I have to click publish, which creates an error in dext but still creates a supplier, then go into zoho > vendors > set the VAT status/scheme and then go back to dext so it accepts the bill.