Expenses - Restrict tracking category options
Currently, all our tracking categories are available to those entering expenses, however, the majority are not relevant to expenses (although they are required for invoicing so we cannot remove them from the list). We would like to be able to chose which items in the categories are available and which are not, just like we are able to with the GL accounts.

Hey Vanessa
Thanks for submitting this idea on Xero Product Idea's.
As you're aware, currently there isn't a restriction on which tracking options you can select when you're entering transactions and expense claims.
We appreciate you taking time to let us know how we could improve Xero for you.
Your feedback will soon be reviewed by our Community team, and in the meantime this can begin to build support with votes from other community members.
If you're interested to see recent releases or get a pulse on what's coming soon see The Long and Short of it. 🙂