Receivable accounts not showing up?

[Macho Philipovich]

Hi again,

When I go to post my invoices, not all of the accounts receivable I've
(tried to) set up are selectable.

What criteria does it use to determine what goes there? I would think it
would be anything of type "A/Receivable", but of the 6 I've set up (all
but two as a test), only two of them are showing up, and only ones that
are in the main currency.

The context is that I'm trying to create a second account receivable in
a different currency to invoice a client in another country.

Thanks for your help!

Macho