HI I am used xcode for about two days.
This may be a simple fix I am not sure.
I have used a process several times to load an ebooks into an Iphone app using the same template multiple times.
When I go into the edit project settings and adjust the Code signing information which is what I have to do on every book I enter and when I click on the value field of the Code Signing Identity I saw the value I want to use and also the previous values I have used when I entered previous ebooks and this list is getting to be quite long Currently it is about 20 items long but I have to do several hundred mabe even a thousand so this list could get VERY cumbersome VERY quickly.

How do I clear the previous items from the available options in this field

BTW it is the same list in the Any iPhone OS Device listing as well

I am guessing but I thought I saw something related to keychains

any help about this would be GREATLY appreciated

Thanks