curl --request POST \
  --url https://api.hubapi.com/cms/hubdb/2026-03/tables/{tableIdOrName}/draft/import \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form 'config=<string>' \
  --form file='@example-file'

{
  "duplicateRows": 123,
  "errors": [
    {
      "message": "Invalid input (details will vary based on the error)",
      "correlationId": "aeb5f871-7f07-4993-9211-075dc63e7cbf",
      "category": "VALIDATION_ERROR",
      "links": {
        "knowledge-base": "https://www.hubspot.com/products/service/knowledge-base"
      }
    }
  ],
  "rowLimitExceeded": true,
  "rowsImported": 123
}