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IMOS uses the Source Code from the Business Rules form with sequential numbering to create the invoice number for invoices.
Configuration flag CFGEnableDocumentNumbers enables Document Number functionality, for setting up a custom invoice numbering scheme. The appropriate Document Number series is selected based on the type of invoice along with Company Code and/or Counterparty.
Setting Up Document Numbers
In the Financials module center 
, under Setup, click Document Numbers.
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- @COMP (for example, @COMP000000 to @COMP999999): To have document numbers begin with the Company Code.
- @YEAR (for example, @YEAR000000 to @YEAR999999): To have document numbers begin with the invoice date year.
- @REFCODE (for example, @REFCODE000000 to @REFCODE999999): To have document numbers begin with the company's Address Book Reference Code.
- @SOURCE (for example, @SOURCE0000000 to @SOURCE9999999): To have document numbers begin with the Source from the Business Rules form.
To generate an invoice number from the appropriate series, the Document Number series is chosen based on fields in the invoice, using the following sequence. Row order has no effect.
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