API Key Deleting Un-Used Keys

API Key Deleting Un-Used Keys

Hey,

It seems I have hit my maximum with my API keys (10).

The problem I have, they  are not labelled and I don't know where they are associated to. I am not actively using all 10. I wish to delete the unused ones so I can generate more.

In terms of activity I have the following active
1 connection from Unbounce.com to Zoho
2 connections between Call tracking Metrics and Zoho (active accounts)
1 connection for the mobile app for ZOHO

What I don't want to do is delete the wrong ones as I did this before and 
my call tracking messed up for a few weeks.

Does anyone know how to find out where each key is used and  a way to label them?