For AI agents: markdown of this page — /docs-content-en/lists/fields/create.md documentation index — /llms.txt

Create a field

POST /v1/lists/:iblockId/fields

Creates a new field in a list. The field definition is passed in the fields object in Bitrix24 format — property names in uppercase.

Parameters

Parameter Type Required Description
iblockId (path) string yes List identifier — numeric IBLOCK_ID or symbolic IBLOCK_CODE. List of lists: GET /v1/lists

Request fields (body)

Field Type Required Description
iblockTypeId string no Info block type. Values:
lists — regular lists, default
lists_socnet — workgroup lists
bitrix_processes — service workflows
fields object yes Properties of the new field in Bitrix24 format (uppercase)
fields.NAME string yes Field name
fields.TYPE string yes Field type. Allowed values — Field types
fields.CODE string yes Field symbolic code. Without it the request ends with a 422 BITRIX_ERROR response
fields.IS_REQUIRED string no Whether the field is required: Y or N
fields.MULTIPLE string no Multiple value: Y or N
fields.SORT number no Field sort index in the card
fields.DEFAULT_VALUE string no Default value

Examples

curl — personal key

Terminal 
curl -X POST https://vibecode.bitrix24.com/v1/lists/23/fields \
  -H "X-Api-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "fields": {
      "NAME": "Status",
      "TYPE": "S",
      "CODE": "STATUS"
    }
  }'

curl — OAuth application

Terminal 
curl -X POST https://vibecode.bitrix24.com/v1/lists/23/fields \
  -H "X-Api-Key: YOUR_APP_KEY" \
  -H "Authorization: Bearer USER_SESSION_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "fields": {
      "NAME": "Status",
      "TYPE": "S",
      "CODE": "STATUS"
    }
  }'

JavaScript — personal key

javascript 
const res = await fetch('https://vibecode.bitrix24.com/v1/lists/23/fields', {
  method: 'POST',
  headers: {
    'X-Api-Key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    fields: {
      NAME: 'Status',
      TYPE: 'S',
      CODE: 'STATUS',
    },
  }),
})

const { success, data } = await res.json()
console.log('Field ID:', data.id)

JavaScript — OAuth application

javascript 
const res = await fetch('https://vibecode.bitrix24.com/v1/lists/23/fields', {
  method: 'POST',
  headers: {
    'X-Api-Key': 'YOUR_APP_KEY',
    'Authorization': 'Bearer USER_SESSION_TOKEN',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    fields: {
      NAME: 'Status',
      TYPE: 'S',
      CODE: 'STATUS',
    },
  }),
})

const { success, data } = await res.json()

Response fields

Field Type Description
success boolean Always true on success
data.id string Identifier of the created field in the format PROPERTY_<number>

Response example

JSON 
{
  "success": true,
  "data": {
    "id": "PROPERTY_1177"
  }
}

Error response example

422 — CODE not passed:

JSON 
{
  "success": false,
  "error": {
    "code": "BITRIX_ERROR",
    "message": "Please fill the code fields"
  }
}

Errors

HTTP Code Description
400 INVALID_IBLOCK_TYPE iblockTypeId is not one of lists, bitrix_processes, lists_socnet
400 MISSING_REQUIRED_FIELDS The fields object is missing or lacks NAME / TYPE
422 BITRIX_ERROR Bitrix24 rejected the creation. For example, CODE is not filled — message «Please fill the code fields»
403 BITRIX_ACCESS_DENIED No permission to edit the list
403 WRITE_BLOCKED_READONLY_KEY The key is in read-only mode
403 SCOPE_DENIED The key lacks the lists scope
401 TOKEN_MISSING The key has no configured tokens
409 LISTS_MODULE_NOT_ENABLED The «Lists» module is not enabled on the portal

Full list of common API errors — Errors.

Known specifics

The field code is required on creation. A field is created only when CODE is passed in fields. Without it the request ends with a 422 BITRIX_ERROR response and the message «Please fill the code fields», even though NAME and TYPE are filled.

See also