All attributes used still need few more...howto capture info?

Hi Experts,

In the transaction form, we have used all 15 attributes (transaction info) at the header. We need two more attributes (updatable any time) for capturing information. I have to report based on those fields hence for consistency purpose I cannot use any other fields on the form (per my assessment).

I could have used Notes section but the 'Source' is 'System' lookup and cannot update it.

Can you suggest any way out?

Thanks.

Anil