curl --request POST \
  --url https://app.simcel.io/api/master/v1/product-values \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "workspaceId": "ws_abc123",
  "planId": "plan_9xKz2",
  "productId": "SKU-001",
  "customerRef": "CUST-FR-001",
  "name": "GrossSalesValue",
  "value": 26,
  "startDate": "2025-07-01",
  "endDate": "2025-12-31"
}
'

{
  "success": true,
  "overrideId": "<string>",
  "appliedAt": "2023-11-07T05:31:56Z"
}