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

# Combine Containers

> Merges one Google Tag Manager container into another: the source container's tags, triggers, and variables move to the target container and the source is retired

Merges one Google Tag Manager container into another: the source container's tags, triggers, and variables move to the target container and the source is retired. This cannot be undone.

|                       |                          |
| --------------------- | ------------------------ |
| **App**               | Google Tag Manager       |
| **Operation ID**      | `gtm_combine_containers` |
| **Type**              | Action                   |
| **Connection**        | `gtm` (required)         |
| **Credits per run**   | 1                        |
| **Agent / MCP tool**  | Yes                      |
| **Requires approval** | Yes (write operation)    |

## Inputs

| Field                                  | Type                      | Required | Default   | Description                                                                                                                                                                  |
| -------------------------------------- | ------------------------- | -------- | --------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `account`                              | DynamicAccount            | Yes      | -         | Select the Google Tag Manager account.                                                                                                                                       |
| `container`                            | DynamicAccount            | Yes      | -         | Select the target container. It absorbs everything from the source container and remains after the merge.                                                                    |
| `source_container`                     | DynamicAccount            | Yes      | -         | Select the source container. Its tags, triggers, and variables are moved into the target container, and the source container is retired by the merge. This cannot be undone. |
| `setting_source`                       | enum (`current`, `other`) | No       | `current` | Which container's settings the merged container keeps: current (the target container's settings) or other (the source container's settings).                                 |
| `allow_user_permission_feature_update` | boolean                   | No       | -         | Set to true to allow the merge when it would enable per-user permission features on the target container. The API rejects the merge otherwise.                               |

## Output

**Type**: `Dict`

Returns the merged container as provided by the Tag Manager API.