Follow-up from "Resolve "Backend should return a SCJSONSyntaxError when a bad JSON document was sent""

The following discussion from !1 (merged) should be addressed:

• @anselmstordeur started a discussion:

  This could be a seperate error type. Something like SCRequestBodyToLargeErrorResponse... There is no model for this for now.

  You can also resolve this in a seperate issue if you want...