How to know which robot is making a dispense_request

[TheConstructAi]

Hi,

This is a very simple question, but seems that the structure doesn't support this as far as we see:

We have a robot that is fulfilling a dispense_request. The message published when it reaches the dispenser location is 👍
time: sec: 0 nanosec: 0 request_guid: delivery.dispatch-0 target_guid: panda_robot_arm_dispenser transporter_type: barista items: []

We know that its a barista robot, but we don't know which one is asking this.
I there somewhere where we can set this information, without having to modify the core code of task management of RMF? Is there an option in the djson file or something similar?
Is there a way of knowing who issued that request in the first place?