Cash Book interface

We currently use the 53/CSP cash-book interface to post cash and allocate 
against open items.  Basically,  we post manual invoices and credits onto the 
S/L and then do a weekly run to process any of the accounts concerned that have 
a credit balance.   This run provides the data to 53/CSP which then generates a 
payment and allocation of the open items concerned.

However, we now need to take the weekly run a step further by getting it to 
process accounts where we are owed money.  We'd do this by creating a single 
"carried fwd" transaction on the account for the amount owed and again 
allocating the items concerned down to zero.
 
I'd like to know if anyone has any documentation around this interface that 
they would be willing to share, or has done anything similar?   

Thanks in advance.

_____________________________________________________________________
This transmission and any attachments are confidential and are intended solely 
for the named addressee (s). If you are not the addressee, please do not read, 
copy, use or disclose this transmission and please notify us immediately by 
telephone on 
+44 (0) 1670 594848 or by reply.  Please then delete this transmission from 
your system.

Although we have taken steps to ensure that this email and attachments are free 
from viruses, we advise that in keeping with good computing practice the 
recipient must ensure that they in fact are virus free.

No contracts may be concluded on behalf of Fone Logistics LTD by means of email 
communications.