Document content is not coming in outbound payload

Summary:

We are getting the documents from a 3rd party app in OTM on a shipment and same document we need to send it to FourKites

While sending that document to FourKites through agent, it is not including Document Content in its payload, so integration is failing in OIC.

Content (please ensure you mask any confidential information):

We are getting the documents from a 3rd party app in OTM on a shipment and same document we need to send it to FourKites

While sending that document to FourKites through agent, it is not including Document Content in its payload, so integration is failing in OIC