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# Put a second document on the same order

One order can hold more than one quote or invoice. This is useful when you invoice a job in stages, or when a client adds extra work to a job that is already running. You can attach a document to an order in two ways: from the order in **Sales › Orders**, or from the quote or invoice editor. Both create the same link.

## Link an existing document from the order

1. Open the order in **Sales › Orders**.
2. Under **Linked Documents**, select **+ Link document**.
3. Choose the quote or invoice you want to add to this order.
4. Check that the document now appears under **Linked Documents**.

![An order with its quote under Created from, an invoice under Linked Documents (4), Link document (2) and the order's history.](https://getzendo.io/wp-content/uploads/2026/11/kb-b7-order-docs.webp =559x469)

This way works for documents that already exist, for example when you are tidying up your orders.

## Link a document while you create it

In the quote or invoice editor, choose the order in **Link to existing Order**, and the document is added to it. If you leave the field empty, Zendo creates a new order for the document instead. This is the quicker way when you are writing the document anyway, for example to invoice the second stage of a job. See [Edit a quote or invoice](https://help.getzendo.io/en/article/edit-a-quote-or-invoice-jglivw/).

## When one order should hold several documents

**Stages.** A deposit now and the balance later can be two invoices on the same order. The order stands for the job, and each invoice is one instalment.

**Extra work.** When the client orders more than you first agreed, put the new document on the same order, so the extra work does not show up as a separate, unrelated order.

**A quote and its invoice.** These you do not need to link yourself. When a quote's **After client approves** setting creates an invoice, Zendo links the quote and the invoice for you. See [Send a quote](https://help.getzendo.io/en/article/send-a-quote-5leqg/).

## What the order shows

The document that created the order appears under **Created from**. Every document you link appears under **Linked Documents**, each with its own status and its own payment date. Each link you add is also recorded in the order's **History**.

For how several documents affect the order's payment status, see [Follow orders: fulfillment and payment](https://help.getzendo.io/en/article/follow-orders-fulfillment-and-payment-1oq1mqu/).

## Related

- [Send a quote](https://help.getzendo.io/en/article/send-a-quote-5leqg/)
- [Issue an invoice](https://help.getzendo.io/en/article/issue-an-invoice-ktxe67/)
- [Edit a quote or invoice](https://help.getzendo.io/en/article/edit-a-quote-or-invoice-jglivw/)
- [Mark a document as paid or refunded](https://help.getzendo.io/en/article/mark-a-document-as-paid-or-refunded-xqxof3/)
- [Follow orders: fulfillment and payment](https://help.getzendo.io/en/article/follow-orders-fulfillment-and-payment-1oq1mqu/)