The idea is to add X-Request-ID as a header for each API proxy, so it is possible to trace all the requests in system/processes by X-Request-ID.

To add X-Request-ID in the header:

X-Request-ID is a random id that is in the form of UUID. When handling a request, APIGarden will use the X-Request-ID value from the header as request_id.

Header -  X-Request-ID:  Random UUID value

When you don't have an X-Request-ID:

In case, if you don't have an X-Request-ID then API proxy will randomly generate a UUID and use this value as an X-Request-ID while handling the requests.