Using API V3 I get json template structure.

The structure contains field names, both system and UDF "Additional field".

Questions:

1. udf - "Additional field"

How to get information (field type(int, string, list, title, default value, list of values for pick field type)) about

field by name.

for example name:

udf_sline_321,

udf_pick_342

2. "System field"

How to get information (field type(int, string, list, title, default value, list of values for pick field type)) about

field by name.

for example name:

"group",

"category",

subcategory",

"item"

Thanks