Geminate comes with a feature to edit auto increment sequence for any purchase documents like Purchase Order / Purchase Quotation, Incoming Shipment, Vendor Bill and Refund (Debit Notes). It helps you to alter the document number/reference of any purchase record which is auto generated with a complete number like prefix or suffix or number. it is validating as well for unique document reference. it enables a special access role who has authority to modify such purchase sequences.