If the supplier does not provide a duplicate invoice a photostat copy must be made.

In corporate America, this frequently occurs when accounts payable staff accidentally pay a duplicate invoice.

A common example involves duplicate invoices.

Then the duplicate invoice arrives and inadvertently gets paid as well, perhaps under a slightly different invoice number.

Then I showed the duplicate invoices to Mr Howell.'

If you cannot get a duplicate invoice from your supplier, tell your local VAT Business Centre.

So far, vendors have provided duplicate invoices, and the university has been able to account for more than 96 percent of the dollar value of the 1986 records, Columbia officials said.

After the A/P staff member looks it up and finds it has not been paid, the vendor sends a duplicate invoice; meanwhile the original invoice shows up and gets paid.

You pay for procedural costs which include postage, telephoning, the preparation of duplicate invoices and further statements, the writing of letters, the arranging of standard follow-ups and for all the other internal procedures necessary when you are not paid.