You can use the Reference material here to help find information about requests and fields, including:

Connection details like endpoints, methods, and URIs.
Field information such as mandatory fields and maximum and minimum field lengths.

In This Section

Topic	Description
Send Document	The request you use to send Documents to the service.
Idempotency Key	To prevent submitting duplicate copies of the invoice, supply a key parameter.
Get Document Status	The request you use to retrieve the status of the processing.
Document Workflow Status	The messages sent back by the Get Document Status request.
Get Documents from the Invoice Queue	Use this request to retrieve documents to be integrated into your processing system.
Get Additional Document Data	Use this request to retrieve additional raw data related to the invoice.
Mark Documents as Integrated	Use this request to mark documents as integrated.