How to look up an invoice in M3
Log into M3 -OIS300
******You may search by Po Number (Consumers Name or Online Shopify Order Number) or by M3 order number
1. Highlight Order Line (will highlight Blue)
2. In Gray Tool Bar (At Right Side) - Click the double back arrows) 
3. Side appears (Right side of screen) - "Customer Master"
- Scroll down to "Related Information"
- You will see the Order Acknowledgement -> Using the forward arrow's go to page 2 -> This will be the order invoice.
See Sample of Invoice below