Get document upload status

get https://gateway.stage.bill.com/connect/v3/documents/upload-status

Get status of a document upload. Use this endpoint to identify when a document upload is complete.

At the start of the document upload process (IN_PROGRESS), BILL generates an uploadId for the document. The value begins with 0du.
When the document upload is complete (UPLOADED), BILL generates a documentId for the document. The value begins with 00h.