Error Code: 1003 (Parameter has wrong format)
HTTP status Code: 400
This is validation error. There are many other validation types, but this particular checks if value of parameters you send in request are in proper type.
Generally we check:
- resource ID format
- email address syntax
- IP address syntax
- reserved words
- forbidden words
- checks against dictionary (e.g. opt-in type values during adding contact)
- date format
- phone number format