---
title: companyAssignMainContact - GraphQL Admin
description: Assigns the main contact for the company.
api_version: 2025-10
api_name: admin
type: mutation
api_type: graphql
source_url:
  html: https://shopify.dev/docs/api/admin-graphql/latest/mutations/companyassignmaincontact
  md: https://shopify.dev/docs/api/admin-graphql/latest/mutations/companyassignmaincontact.md
---

# company​Assign​Main​Contact

mutation

Requires `write_customers` access scope or `write_companies` access scope. Also: The API client must be installed on a Shopify Plus store.

Assigns the main contact for the company.

## Arguments

* company​Contact​Id

  [ID!](https://shopify.dev/docs/api/admin-graphql/latest/scalars/ID)

  required

  The ID of the company contact to be assigned as the main contact.

* company​Id

  [ID!](https://shopify.dev/docs/api/admin-graphql/latest/scalars/ID)

  required

  The ID of the company to assign the main contact to.

***

## Company​Assign​Main​Contact​Payload returns

* company

  [Company](https://shopify.dev/docs/api/admin-graphql/latest/objects/Company)

  The company for which the main contact is assigned.

* user​Errors

  [\[Business​Customer​User​Error!\]!](https://shopify.dev/docs/api/admin-graphql/latest/objects/BusinessCustomerUserError)

  non-null

  The list of errors that occurred from executing the mutation.

***

## Examples

* ### companyAssignMainContact reference

## Mutation Reference

```graphql
mutation companyAssignMainContact($companyId: ID!, $companyContactId: ID!) {
  companyAssignMainContact(companyId: $companyId, companyContactId: $companyContactId) {
    company {
      # Company fields
    }
    userErrors {
      field
      message
    }
  }
}
```

## Input

```json
{
  "companyId": "gid://shopify/<objectName>/10079785100",
  "companyContactId": "gid://shopify/<objectName>/10079785100"
}
```

##### Variables

```
{
  "companyId": "gid://shopify/<objectName>/10079785100",
  "companyContactId": "gid://shopify/<objectName>/10079785100"
}
```