Can I change the Core Location message when accessing ALAssets?

I am using the ALAssets structure to access the Photo Library. When the user first accesses it, the user asks if the application can use its current location, and I understand that this is necessary and why.

However, there is a target property in the Core Location Manager in which, it seems, I can set up an iPad warning message to say why I need to click Yes. (I don't actually use location, I just want to access the photo library.)

I cannot figure out how to find out where to use this property, since a warning message appears when I first try to list the assets, and there seems to be nothing to intercept before the error occurs if the user says “NO”.

I know that I can bring my own notification to the first use of ALAssets in anticipation of the built-in iPad alert, but it looks like it is replacing the actual iPad message.

Thank.