Invoice reference numbers

If you are issuing a large number of invoices, reference numbers can help associate wire transfers with the correct invoice or client. The reference numbers Sliptree generates are compliant with the Estonian and Finnish reference number standards.

Reference numbers are disabled by default, but can be enabled for Estonian companies, by navigating to Business Settings > Settings, to the Invoice reference number section.

There are 3 options to choose from:

• Disabled - reference numbers won't be generated for invoices
• Invoice-based - reference number will be generated based on the invoice number
• Customer-based - reference number will be generated based on the customer number (ID).

Alternatively, reference numbers can be enabled or disabled directly when creating or editing an invoice:

1. Click on the invoice details area (this is where the invoice number and date are located)
2. If your company is in one of the supported countries (Estonia and Finland, currently), you should see a "Reference number" button at the bottom. Click on it.
3. You will see the same 3 options as describe above
4. After making your choice, Save the settings, then proceed to creating/editing your invoice.