taskTarget Endpoint not working as Expected

curl https://crm.mydomain.de/rest/batch/taskTargets \
  --request POST \
  --header 'Content-Type: application/json' \
  --data '[
  {
    "taskId": "698ad441-a727-4107-9dd4-49aad9733782",
    "targetCompany": "6cfffee7-f6f1-4fc0-ab95-f7dd5064e542"
  }
]'

{
  "data": {
    "createTaskTargets": [
      {
        "id": "ea9b1544-2cf4-4648-9b46-8dac993a92e2",
        "createdAt": "2026-02-16T09:12:48.717Z",
        "updatedAt": "2026-02-16T09:12:48.717Z",
        "deletedAt": null,
        "targetCompany": "6cfffee7-f6f1-4fc0-ab95-f7dd5064e542"
        "taskId": "698ad441-a727-4107-9dd4-49aad9733782" ...
      }
    ]
  }
}