> ## Documentation Index
> Fetch the complete documentation index at: https://help.withallo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Delete company attribute

> Deletes an attribute and clears its value on every company. This cannot be undone. Attributes synced from a CRM integration cannot be deleted.

<Note>
  **Required scope:** `CRM_DELETE`
</Note>

Deletes the attribute and clears its value on every company. This cannot be undone.

Returns `204 No Content`.

Attributes synced from a CRM integration cannot be deleted. Remove them in the connected CRM.

## Errors

| Status | Code | When |
| - | - | - |
| `403` | `API_KEY_INSUFFICIENT_SCOPE` | The key does not hold `CRM_DELETE` |
| `404` | `TEAM_NOT_FOUND` | The workspace is not on the new contact model |
| `404` | `ATTRIBUTE_NOT_FOUND` | No attribute with this key |
| `409` | `ATTRIBUTE_MANAGED_BY_INTEGRATION` | The attribute is managed by a CRM integration |


## OpenAPI

````yaml DELETE /v2/api/crm/companies/attributes/{key}
openapi: 3.0.3
info:
  title: Allo API
  description: >-
    Allo API provides programmatic access to your Allo account, allowing you to
    manage webhooks, retrieve calls and contacts, and send SMS messages.


    All requests to `/v1/api/**` endpoints automatically go through quota
    checking and scope validation.
  version: 1.0.0
  contact:
    name: Allo Support
servers:
  - url: https://api.withallo.com
    description: Production server
security: []
tags:
  - name: Summary Templates
    description: >-
      Manage call summary templates that control how AI-generated call summaries
      are structured for your team.
  - name: Webhooks
    description: >-
      Manage webhook endpoints to receive real-time notifications about events
      in your Allo account. Each endpoint subscribes to one or more event topics
      and is verified with a signing secret.
  - name: Calls
    description: >-
      Retrieve and search call records with filtering and pagination. Filter
      calls by your Allo phone number.
  - name: Contacts
    description: >-
      Search and retrieve contact information with sorting and pagination.
      Includes engagement level tracking.
  - name: SMS
    description: Send SMS messages to phone numbers using your Allo numbers.
  - name: Phone Numbers
    description: Retrieve information about your Allo phone numbers.
  - name: Analytics
    description: Pre-computed call metrics, team performance, and outbound dial funnel
  - name: CRM
    description: Manage people, companies, and deals in your CRM.
  - name: Notes
    description: >-
      Internal team notes on conversations and CRM people, with @mention
      support. Notes are never visible to the contact.
  - name: Threads
    description: >-
      Team discussion threads attached to a conversation item (call, SMS, or
      conversation note). One thread per item.
  - name: AI Receptionist
    description: >-
      Read and write the AI receptionist configuration of a phone line: business
      details, voice, prompt, capabilities, business hours, transfer rules,
      scheduling calendars and knowledge sources.
paths:
  /v2/api/crm/companies/attributes/{key}:
    delete:
      tags:
        - CRM
      summary: Delete custom company attribute
      description: >-
        Deletes an attribute and clears its value on every company. This cannot
        be undone. Attributes synced from a CRM integration cannot be deleted.
      operationId: deleteCompanyAttribute
      parameters:
        - name: key
          in: path
          required: true
          description: Attribute key, as returned by the list endpoint
          schema:
            type: string
            example: industry_segment
      responses:
        '204':
          description: Attribute deleted
        '401':
          $ref: '#/components/responses/ApiUnauthorized'
        '403':
          $ref: '#/components/responses/ApiForbidden'
        '404':
          $ref: '#/components/responses/ApiNotFound'
        '409':
          $ref: '#/components/responses/ApiConflict'
        '429':
          $ref: '#/components/responses/ApiRateLimited'
      security:
        - ApiKeyAuth: []
components:
  responses:
    ApiUnauthorized:
      description: Invalid or missing API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    ApiForbidden:
      description: API key lacks the required scope or access to the resource
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    ApiNotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    ApiConflict:
      description: Conflict with existing resource
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    ApiRateLimited:
      description: Rate limit exceeded
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
  schemas:
    ApiError:
      type: object
      properties:
        error:
          type: object
          properties:
            type:
              type: string
            code:
              type: string
            message:
              type: string
            retryable:
              type: boolean
            request_id:
              type: string
            retry_after_seconds:
              type: integer
              nullable: true
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: Authorization

````

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