Using the suggested supplier payments will allow reprint as it is stored in document storage. I know its a one off payment but you can pay one off by using suggested supplier?

The ability to print a remittance advice from a manually posted payment really is a basic function that should be a standard option.

The ability to print or re-print a remittance advise should be standard functionality as it is with all other documents 

also can't match/allocate invoices against a credit note and produce a remittance - doesn't let you even post the allocation in sage200 'amend suggested payments. ideally the supplier payment function would be far more beneficial if similar to sage 50 functionality 

Just a query: as remittance advices usually shows what's been paid, what would you want to happen if no allocations are made?

A suitable layout is possible in report designer, by using criteria to select the payment then linking to the allocations.  It's worth asking if you can get it as one of the free reports included in the support contract!

If not, Rich Reports 103 would be a good starting place