> ## Documentation Index
> Fetch the complete documentation index at: https://help.moyacascade.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Attach and reuse supporting documents
> Upload evidence, select it from the document pool, and open documents from a purchase row.
Supporting documents connect a purchase to its evidence, such as an invoice or receipt. The document pool belongs to the current workspace and accounting year.
## Upload a new document
In the purchase's **Purchase** step, find **Supporting documents**. You can scroll inside the dialog while its action buttons stay visible.
Click **Upload** and select a file. Wait for the upload to finish. The uploaded document appears attached to the purchase.
Supported formats are **PDF**, **PNG**, **JPG/JPEG**, **WebP**, and **HTML**. Each file can be up to **10 MB**. You can attach up to **10 documents** to a purchase.
Check the filename. To remove a document from this purchase's selection, use its **×** button or untick it in the pool. Then continue with the purchase.
## Reuse a document from the pool
1. Expand **Supporting documents** with its chevron.
2. Find the document in the pool.
3. **Tick its checkbox** to attach it to this purchase.
4. Continue and save the purchase.
A document appearing in the pool is available to use; it is attached to this purchase when it is selected. Unticking it changes this purchase's selection and keeps it available in the pool.
## Open a saved purchase's documents
In the Purchases table, click the document count in the **Docs** column. A document menu appears. Choose a file to download it.
The document count is the number of documents attached to that purchase. The left-hand row arrow opens purchase details; the Docs button opens the documents.
This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.