How to find out if a field can be used for creation and updation

API
3

but here in this page Custom fields, they mentioned

The edit_flag parameter in the response body of an entity’s fields can be used to identify if the field is a custom field:

  • true – a custom field
  • false – Pipedrive default field, right
  1. so, are you saying non custom fields are not updatable and creatable ?
  2. also, here according to you this name field should be not creatable and updatable, because its field data have edit_flag false, can you see this

“{
“id”: 1,
“key”: “name”,
“name”: “Name”,
“group_id”: null,
“order_nr”: 0,
“field_type”: “varchar”,
“json_column_flag”: false,
“add_time”: “2025-04-03 14:21:56”,
“update_time”: null,
“last_updated_by_user_id”: null,
“edit_flag”: false,
“details_visible_flag”: false,
“add_visible_flag”: true,
“important_flag”: false,
“bulk_edit_allowed”: true,
“filtering_allowed”: true,
“sortable_flag”: true,
“mandatory_flag”: true,
“searchable_flag”: false,
“description”: null,
“created_by_user_id”: null,
“active_flag”: true,
“use_field”: “id”,
“link”: “/organization/”
}”