UPS Worldship not printing tracking barcode.
Step 1. From UPS select the Printing Activities tab and then click on Printing Setup
Step 2. Highlight "Label". We can see the printer is set for Thermal 4x6 which is the problem. Click Printer Setup
Step 3. From the dropdown menu select “Thermal 4x8 Perforated” and click Apply to close the windows, and then click OK to close the System Preferences Editor Window.