Categories the field belongs to

Groups the field belongs to

Field display attributes (name, label, placeholder, etc.)

Validation rules to apply to the field

Field configuration including the Spektr data field mapping

Sub-field definitions. The whole array is replaced when this key is present, so to add/remove/reorder a single entry you must send the full desired array (recursively).

Required when the effective type is "object" (a non-empty array); must be omitted for all other types. If type is being switched away from "object", omit subFields entirely.