Apple wildcard app Id

[c853a2a5f276a158117e]

I’d like to create wildcard app Id, and I have some questions.

1. Can I use my own wildcard Id?

2. When using Wildcard Id, it seems like

   
   I need to make bundle ID suffix. and appstore said ‘wildcard Id + bundle Id suffix’ is App Id, not just Wildcard Id. So What is my real Id??