Request an extract of expenses to be created.
This API requests a "snapshot" of "payables" to be created. It responds immediately with a "key" - a reference for your request.
The "key" can be used to check the status of your request by using the GET API call.
Requesting "snapshots" should be done sequentially and cannot be done simultaneously (in parallel).
Requesting a new "snapshot" with exactly the same parameters will return the same "key" while the "snapshot" exists. "Snapshots" are typically cached for 12 hours.
These two APIs (POST and GET) implement the so-called asynchronous request-response pattern. This design decouples long-running backend jobs from the synchronous nature of REST APIs.
For more information about payables, see this guide.