Error in Suggest vendor payments

_mon_

NAV 2009 sp1.
In the payment journal, i propose vendor payments in September via "Suggest vendor payments".
I print checks and i post payments.
I still have one pending payment.
Now I Suggest vendor payments in October. I get an error, "Id. Liq. No document has already been ...".
This is because i am trying to create a journaling settlement payments for an effect that is still pending (it is in the diary of payments, as was proposed in the previous month), ie trying to create a record settlement of an pending invoice twice.
Sounds good to check this, do not think twice payment of an effect.
But how do i Suggest vendor payments and that does not include those already proposed earlier and have not been cleared yet?

Thank you

_mon_

To avoid suggesting them again when we return to generate proposals for payment from the payment journal, you should select the proposal that we want to generate NO again and press Account button, ledger entries.
Here we mark the invoices that we want to propose that vendor payments, checking in the "On hold" a value.
Then, if we throw in the process of generating new payment proposal, will not consider the invoices thus marked.