Invoice reference numbers

If your business is based in Estonia or Finland, reference numbers can help you match incoming wire transfers to the right invoice or customer. The numbers Sliptree generates follow the Estonian and Finnish standards.

Reference numbers are disabled by default.

Enabling reference numbers for all invoices

Go to Business settings → Settings and find the Invoice reference number section. Pick one of:

• Disabled — no reference numbers are generated.
• Invoice-based — the reference number is derived from the invoice number.
• Customer-based — the reference number is derived from the customer number (ID).

Overriding the setting on a single invoice

You can also change the setting directly while creating or editing an invoice:

1. Click the invoice details area (where the invoice number and date live).
2. Click Reference number at the bottom of the panel. This option only appears for businesses in supported countries.
3. Pick one of the three options described above.
4. Save the settings, then continue editing the invoice.