# Link Test Suites

https://api-docs.lumar.io/docs/protect/global-templates/global-templates-link-test-suites

The following mutation links a test suite to a global template:

```graphql
mutation LinkToGlobalTemplate($parentTestSuiteId: ObjectID!, $childTestSuiteId: ObjectID!){
  linkChildTestSuiteToParentTestSuite(input: {
    parentTestSuiteId: $parentTestSuiteId
    childTestSuiteId: $childTestSuiteId
  }) {
    parentTestSuite {
      id
    }
    childTestSuite {
      id
    }
  }
}
```

:::caution

In case you link two test suites together and none of them are linked, the `parentTestSuiteId` will become a Global Template.

:::