This error was overcome by populating the Email address field on the Invoice and setting "Accept Credit Cards" to true. Once that was done, we were able to get ...
Thank you for your quick reply.I tried sending GET request, it gives me 200 response but within response body it give me the same error message as shown below.G...
Thank you for your help.I have some question on thisI am sending the POST request after creating the invoice as belowEndpoint=callout:QuickBook_Online3/v3/compa...