ASN (Advance Shipping Notice) allows you to track orders while they are in transit from the supplier to your location.
The ASN screen shows different carriers you can choose from. If you don't find a carrier listed there, you can easily add that under the admin screen.
Here are the steps
1. Go to Configurations -> Manage Carrier.
2. Click on Add Carrier and enter the details in the following screen
a) SCAC stands for Standard Carrier Alpha Code.
You can see all codes here
If you don't know the code, just enter 123
b) Enter the Carrier name, for example, UPS
c) Enter the carrier's website, for example, https://www.ups.com/
Click Create Carrier to complete the add process.