Hello, I want to do billing without devices but have some question. So I created just installation for billing.
1. EA56- I define rate types and mark "Permissibility for registers"
2. EA30 - I Create a Rate with Permiss. for registers. Put facts.
3. EA35 - Define schemas, using my rate
4. EA53 - Define rate category, using my schema
5. EA87 - Define rate determination with rate type
6. ES31 - Put rate category to my installation
So what I do wrong while create master data for billing without devices?