Attaches, repoints, or detaches the configuration template linked to a group. This endpoint only manages the link (by ID) between a group and an existing configuration template — it does not create, modify, or delete the template itself. To manage a template's own fields (name, description, request configurations, visibility, etc.), use the /configuration-templates endpoints.

The request body is {"configuration_template_id": "<uuid>" | null}:

• A <uuid> value links the group to the configuration template with that ID. If the group was previously linked to a different template, the group is repointed in place.
• null detaches the group from its current configuration template. The template is deep-copied into a new private configuration with the same settings so the group's current behaviour is preserved, and the group is repointed at the fork.

The configuration_template_id field is required. Sending {} or any body in which the field is omitted is rejected with 400.

The call is idempotent: if the request body matches the group's current link, no changes are made and no audit events are emitted.

This endpoint is the preferred, Terraform-friendly surface for linking and unlinking configuration templates on groups. The equivalent configuration_template_id field on PUT /groups remains available but is deprecated for this purpose.

{
  "configuration_template_id": "06851574-e50d-40ca-8c78-f72ae6ab4304"
}

{
  "configuration_template_id": "06851574-e50d-40ca-8c78-f72ae6ab4304"
}