I want to develop an invoice numbering convention to help prevent duplicate payments. I want to excluded the dashes, spaces, etc.


We do have an Invoice Processing Policy that addresses a naming convention for invoices without a reference number. The numbering convention may depend upon what type and length of characters the system is able to accept. Some companies have used a combination of the vendor name and date characters as the number. Others have used only numerical characters largely for speed of entry. Some also add a department identifier as part of the number to quickly reference what cost center the charge may apply.

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