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

# Bulk Assign to Groups

> Assign multiple contacts to multiple groups at once

<ParamField body="contact_ids" type="array" required>
  Array of contact IDs to assign
</ParamField>

<ParamField body="group_ids" type="array" required>
  Array of group UUIDs to assign contacts to
</ParamField>

<RequestExample>
  ```json Bulk Assign theme={null}
  {
    "contact_ids": ["1", "2", "3"],
    "group_ids": [
      "ee9fb0b4-83f0-4be5-a0be-1063e05ff0b8",
      "feab58b8-df74-435e-ae09-d7dde096ff0c"
    ]
  }
  ```
</RequestExample>

<ResponseExample>
  ```json 200 - Success theme={null}
  {
    "success": true,
    "message": "Contacts assigned to groups successfully."
  }
  ```

  ```json 422 - Validation Error theme={null}
  {
    "success": false,
    "message": "The given data was invalid.",
    "errors": {
      "contact_ids": ["The contact_ids field is required."],
      "group_ids": ["The group_ids field is required."]
    }
  }
  ```
</ResponseExample>