Creates an incident form field selection

curl --request POST \
  --url https://api.rootly.com/v1/incidents/{incident_id}/form_field_selections \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/vnd.api+json' \
  --data '
{
  "data": {
    "type": "incident_form_field_selections",
    "attributes": {
      "incident_id": "<string>",
      "form_field_id": "<string>",
      "value": "<string>",
      "selected_catalog_entity_ids": [
        "<string>"
      ],
      "selected_group_ids": [
        "<string>"
      ],
      "selected_option_ids": [
        "<string>"
      ],
      "selected_service_ids": [
        "<string>"
      ],
      "selected_functionality_ids": [
        "<string>"
      ],
      "selected_user_ids": [
        123
      ]
    }
  }
}
'

{
  "data": {
    "id": "1fe2132b-7207-4176-b62f-f5835e01d26a",
    "type": "incident_form_field_selections",
    "attributes": {
      "incident_id": "2085da90-4558-488f-bff6-e2f2284036cc",
      "custom_field_id": 177,
      "form_field_id": "1a3f9d8e-19ce-446b-a016-9e00b895bd36",
      "form_field": {
        "id": "1a3f9d8e-19ce-446b-a016-9e00b895bd36",
        "team_id": 299,
        "slug": "nulla-dolor-ut-vel",
        "kind": "custom",
        "input_kind": "text",
        "value_kind": "inherit",
        "value_kind_catalog_id": null,
        "name": "Nulla dolor ut vel.",
        "description": "Maiores quae iure officia.",
        "shown": [
          "web_new_incident_form",
          "web_update_incident_form"
        ],
        "required": [],
        "default_values": [],
        "show_on_incident_details": true,
        "enabled": true,
        "updated_at": "2026-01-20T05:26:49.027-08:00",
        "created_at": "2026-01-20T05:26:49.027-08:00",
        "options": [
          {
            "id": "837d5676-7f8d-4c4d-96c9-0fd0e6bf936a",
            "form_field_id": "1a3f9d8e-19ce-446b-a016-9e00b895bd36",
            "value": "Modi quam impedit necessitatibus.",
            "color": "#FBE4A0",
            "default": false,
            "position": 1,
            "updated_at": "2026-01-20T05:26:49.047-08:00",
            "created_at": "2026-01-20T05:26:49.047-08:00"
          },
          {
            "id": "4c35e897-96f6-42ed-9174-576c21a3f855",
            "form_field_id": "1a3f9d8e-19ce-446b-a016-9e00b895bd36",
            "value": "Accusantium veniam molestias repellat.",
            "color": "#FBE4A0",
            "default": false,
            "position": 2,
            "updated_at": "2026-01-20T05:26:49.049-08:00",
            "created_at": "2026-01-20T05:26:49.049-08:00"
          }
        ],
        "positions": [
          {
            "id": "be32df31-7046-4b72-b719-7439b996b888",
            "form_field_id": "1a3f9d8e-19ce-446b-a016-9e00b895bd36",
            "form": "web_update_incident_form",
            "position": 2
          },
          {
            "id": "eff7bf01-bbad-4ff9-a4a5-8ffd7f61917b",
            "form_field_id": "1a3f9d8e-19ce-446b-a016-9e00b895bd36",
            "form": "web_new_incident_form",
            "position": 2
          }
        ]
      },
      "value": "Test custom field",
      "selected_group_ids": [],
      "selected_groups": {
        "id": null,
        "value": "Test custom field"
      },
      "selected_option_ids": [],
      "selected_options": {
        "id": null,
        "value": "Test custom field"
      },
      "selected_service_ids": [],
      "selected_services": {
        "id": null,
        "value": "Test custom field"
      },
      "selected_functionality_ids": [],
      "selected_functionalities": {
        "id": null,
        "value": "Test custom field"
      },
      "selected_catalog_entity_ids": [],
      "selected_catalog_entities": {
        "id": null,
        "value": "Test custom field"
      },
      "selected_user_ids": [],
      "selected_users": {
        "id": null,
        "value": "Test custom field"
      }
    }
  }
}