I got the same error message while sending the invoice API. I created the draft invoice using the API. But when I trying to send this invoice got error as below: { "name": "UNPROCESSABLE_ENTITY", "message": "The requested action could not be performed, semantically incorrect, or failed business validation.", "debug_id": "6c10b6f33a4d1", "details": [ { "issue": "USER_NOT_FOUND", "description": "User is not associated with paypal based on invoicer email." } ], "links": [ { "href": "https://developer.paypal.com/docs/api/invoicing/#errors", "method": "GET" } ] } So Kindly let us know Whats wrong with sandbox account. I even changed the email many times but still got same error. Thanks
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