QuickBooks Inventory Software
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In the Document Numbering preferences dialog, you will find a list of different transactions that generate transaction numbers as a means of identifying them. The first text field in this dialog allows you to specify a starting number for each of these ID numbers. The second field allows you to set the increment:
For example, if you set the values for Next Sales Order to 100 and 5, respectively, then your subsequent Sales Orders would be numbered 100, 105, 110, 115, etc.