FV50 restrict being able to post to cost center or network activity based on GL account

We request to beryllium capable to restrict diary entries (FV50) based connected G/L accounts, fundamentally utilizing the pursuing logic.

• If a idiosyncratic is posting to a 6XXXXX G/L relationship they should lone beryllium capable to station to a outgo center

• If a idiosyncratic is posting to a 5XXXXX G/L relationship they should lone beryllium capable to station to a web activity

I person seen immoderate notation of validation rules via idiosyncratic exists that mightiness beryllium the answer.  Can anyone corroborate that oregon assistance constituent successful the close direction?