Hello,
Does anybody know what this error can mean? and if you could you please help me?
The output error message:
{"statusCode":403,"headers":{"Pragma":"no-cache","x-ms-request-id":"a8c9b2df-1850-9cc8-f384-099e983aba4f","Strict-Transport-Security":"max-age=31536000; includeSubDomains","X-Content-Type-Options":"nosniff","X-Frame-Options":"DENY","Cache-Control":"no-store, no-cache","Set-Cookie":"ARRAffinity=7fec6b3d494d502cd339a098a470860ddaf458b68c32b8ce8e190c362de93b94;Path=/;HttpOnly;Secure;Domain=office365-ea.azconn-ea.p.azurewebsites.net,ARRAffinitySameSite=7fec6b3d494d502cd339a098a470860ddaf458b68c32b8ce8e190c362de93b94;Path=/;HttpOnly;SameSite=None;Secure;Domain=office365-ea.azconn-ea.p.azurewebsites.net","Timing-Allow-Origin":"*","x-ms-apihub-cached-response":"true","Date":"Wed, 25 Aug 2021 09:33:30 GMT","Content-Length":"631","Content-Type":"application/json","Expires":"-1"},"body":{"status":403,"message":"You are not authorized to send mail on behalf of the specified sending account.\r\nclientRequestId: 9e5c9100-dc89-431a-b2b4-14b548e6dccb\r\nserviceRequestId: a8c9b2df-1850-9cc8-f384-099e983aba4f","error":{"message":"You are not authorized to send mail on behalf of the specified sending account.","code":"ErrorSendAsDenied","originalMessage":"The user account which was used to submit this request does not have the right to send mail on behalf of the specified sending account., Cannot submit message."},"source":"office365-ea.azconn-ea.p.azurewebsites.net"}}
The flow:

Thank you for your help!