Maintaining a purchase order
You can maintain a purchase order until the order is in Stage 5 Received .
- Select Purchase > Entry > Purchase Order.
 - Click Maintain.
 - Specify the number of the purchase order to maintain.
 - Click Next.
 - 
            To add a line:
            
- In the Advanced Line Entry mode, specify a product. Specify additional information as required.
 - Click Add.
 
 - 
            To maintain an existing line:
            
-  In the Product panel, click the line to
                        maintain.
Optionally, click Edit Lines and then click the right arrow to access the line for editing.
 - Edit the available fields.
 - Click Update.
 
 -  In the Product panel, click the line to
                        maintain.
 - 
            To modify an addon or discount:
            
- Click Review & Totals.
 - Edit the addon or discount.
 - Click Recalculate.
 
 - Click Finish.