curl --request DELETE \
  --url https://ai-loop.alpeadria.com/api/v1/datalake/{source}/databases/{db}/variables \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "variables": [
    "<string>"
  ]
}
'

{
  "statusMessage": "[AILOOP] Variables deleted. 100 documents updated.",
  "deletedCount": 100,
  "deletedFields": [
    "legacy_tracking_id"
  ]
}