When you make a call using Plivo, then a universally unique identifier (UUID) will be assigned to each call to identify and troubleshoot when there is a voice related issue or a call related issues.
How can I find the UUID for a particular call?
There are two ways by which you can find the UUID for a particular call
By checking your account dashboard logs:
1. Login to your Plivo dashboard from here https://manage.plivo.com/dashboard/.
2. Click on Logs.
3. Click on the timestamp of the relevant call which you want to debug.
A new window will pop up with the UUID
Using the get all call details API: https://www.plivo.com/docs/api/call/#get-all-call-details
To find the call_UUID for a certain call you can use this API by making a GET HTTP request to the call detail records(CDRs) which will result with information about calls along with details about each call.