How to upload a bill in accounting module

To upload a bill in accounting module in Odoo, you can go to Accounting > Vendors > Bills > Create. Then you can select the vendor and enter the bill details such as bill number, due date, and amount. After that, you can click on ‘Add an item’ button and select the product. Then you can enter the quantity and price of the product. Finally, you can click on ‘Save’ button to upload the bill. 

To attach a Document to the Bill,

1. Go to the Bill where you want to attach the document. Go to Accounting > Vendors > Bills.

2. Click on the "Clip Icon" 

3. Select the document from your file.

4. You will then see the document attached to your bill accordingly.