Hello.

Each constraints in Symfony have an unique code (uuid, for machine reading).
But those codes are not "documented". I mean, there are no pages on symfony.com which
list all theses code and there associated error.

Is has already been suggested here and here

Why may wonder why we need that. Actually I'm working on an API, and I had to manually document each code :/ I would be nice to document it just once (on symfony.com).

I'm not sure how to build this documentation page

1. manually in a .rst file
2. automatically with a parser