Voucher Creation without G/L Account ( Suspense A/c)

Hi,

We have business scenario where we need to create a Voucher & we are not sure which G/L Account it will hit.

So Voucher will be created & that point of time there will be no information available regarding which G/L Account to be debited.

Then afterwards may be even after a week we will come to know which is exact account we need to update so that portion we would like to complete afterwards.

I looked into Logged Voucher functionality but while re-distributing we need to match the Voucher , I could not find any place (may be I have missed on it) where we can just go & change G/L Distribution & another requirement is to have separate Doc type than PL for this.