I am building an integration through an application Celigo and as I am trying to pass in Sales Order lines, it is giving me an error "{\"error\":{\"code\":\"BadRequest\",\"message\":\"Cannot convert the literal '' to the expected type 'Edm.Guid'. CorrelationId: 6ea9180f-47d4-4e6b-8d76-2c2e0998875a.\"}}"
Has anyone come across this, or know what it is referring to with the 'Edm.Guid"?
Thanks,
Kevin