I've been trying to print on the Zebra Silverline Classic II RFID tags, however, it continuously prints void. The data I'm trying to encode is a text unique ID provided by the company. However, when I tried following the RFID encoder video by BarTender, it still printed void. One thing that I noticed that the RFID encoder is a "RAIN- EPC" instead of EPC Gen 2. I wasn't able to find the tags in the Zebra stock, so I created a custom template. 

I also went through the RFID troubleshooting list from bartender and it was of no help. What can I do to successfully encode the tags?