What is wrong with the following specific purpose: "To inform incoming students about the scholarship opportunities at the college and the financial-aid process"

there is more than one key idea

Explanation:

The main error with this is that there is more than one key idea. When dealing with a specific purpose, it must be just that "specific". In other words, the message must focus completely on a single key aspect that it is trying to convey. Adding more than one key idea divides the message and the reader's attention which ultimately fails the main purpose of the message.