How to restrict certain accounts for AP but allow same accounts for GL?

Hi,

Our business needs to work with one set of accounts in GL but would like to restrict same set of accounts for AP.

What would be the best approach to enable module based combo rule?

At my end, I created a separate combo defn, rule & group for these set of accounts. Linked the combo group to GL- ledgers for unit with a specific transaction source (GL). Build combo data.

I could still add invoice using an account that I thought is now restricted for AP but it's just not.

Any suggestions are welcome.

Thanks!