To automatically print a Commercial Invoice, you will first want to create a business rule.
- Create a Business Rule
- In the Basics tab, Set the Event to occur After Shipment Label Prints. Name it "Print Commercial Invoice".
- Go to the Criteria Tab and add the following 2 criteria to the rule:

4. In the Actions tab, add an action with the following settings:

NOTE: You can set the Generation Type to either:
- Prompt (which will open the PDF in another tab as long as the pop-up blocker is disabled) OR
- Print (which will print the document directly to a laser printer if a PDF printer is set up on this station and you are running the merchant app)
Once done, click the Save Changes button on the top-right of the form.