ClickAtell sender ID field

What info goes in the clickatell sender ID input field on the back end?

I have a username, pw, api #, I just don't know what to put in the sender ID field. I see no "Registered Sender ID" on the clickatell site in my account. Is it just my sender text phone number that I created?

Hi Joseph,
It's optional field, you don't need to enter value for that configure option.
Thanks
Dam

Sorry I found it. Once the clickatell is completely set up and authorized you click on "SMS" and go down to the integration. When you "activate" it they give you an "integration ID" in the detail's tab of setting it up. I think this is the proper ID to put in that box. Let me know if I am correct. Thank you.