By using facets, you can narrow the data types to some restricted set or combination of numbers or letters. For example, a string is defined to have a maximum of 1024 characters in the Level-A model. Up to now, it is not possible to change facets when creating a profile. Example: To define a string with 20 characters max., you have the following options right now:
- Changing Level A model - this is not intended
- Adding a custom data type, for example String20
Now think about a second profile, where a String with 100 characters max. is needed on the same attribute as before - both solutions will fail here, you cannot make these two profiles out of the same data source. I think this topic is a methodology request, and, if solved, it will change over into a tool request.