How to close a document?

To close a sales, purchases or internal document, follow these steps:

1. Access [Marketing & Sales / Purchases] | [Sales / Purchase / General] | [Documents / Internal Documents];
2. Create a new document;
3. Click Save;
4. Edit the document previously created;
5. In the tab State, select the option Closed;
6. Finally, click Save.

After closing the document, it no longer is available for changing. If you edit a closed document, the document rows are displayed in red and the save button will not be available.