Why is the vendor email missing in the form for Purchase Order creation?
The reason for the missing vendor email in the form for Purchase Order creation is a bug
in the QuickBooks Online API, which does not allow to save vendor emails.
Unfortunately, ApprovalMax completely depends on QuickBooks Online here as we can't
fix the problem on our side. However, it is planned to fix this bug with
the new version of the QuickBooks Online API (v4).
For the time being, you
should go to the Purchase Order once it's been created in QuickBooks Online by ApprovalMax, enter the email, and then send the Purchase Order
to the vendor.