Configure invoice numbering

Invoice numbers can be legal accounting records. Configure the sequence before issuing the first invoice and avoid changing old documents unless your accountant or local rules require it.

Open Docket → Invoice numbering.

Default numbering

For each document type, choose:

• Prefix: text before the number, such as INV-.
• Suffix: optional text after the number.
• Number length: the number of digits, such as 00001.
• Starting number: the next number for a new sequence.
• Annual reset: start a new sequence each year when appropriate.

The preview shows the resulting format before saving.

Different numbering by location or market

Add special numbering when a Shopify location or market needs its own invoice numbers. Docket uses the completed fulfillment location when Shopify provides one. Before fulfillment, or when an order is not tied to one location, Docket uses the default numbering.

How Docket prevents duplicate numbers

Docket never gives two documents the same number. If creating a PDF or sending an email needs another attempt, Docket reuses the number already assigned to that order and document type.

Gaps and cancelled documents

Docket does not silently reassign an issued number. Whether local law permits voiding, cancelling, or documenting a gap varies by jurisdiction. Keep the generated record and add the required note or credit document rather than editing the sequence history by hand.

Changing a sequence

Changes apply to future documents. Existing documents keep their original number and order details. If Docket rejects a change, read the explanation on screen; it is usually preventing duplicate numbers, an unsupported placeholder, or a change that could make active numbering unsafe.

Docket is a document tool, not legal or accounting advice. Confirm the numbering pattern and retention period required where the business operates.