Few important details on API /contacts/bulk_create/
- Bulk create API has rate limit of 1 call per minute. So you can't call this API at high rates.
- If your API request is throttled, we return the details of when the API is free to accept the next request.
- All submitted imports will get processed one at a time. So even if you submit 5 CSV files by making the API call 5 times, the import will finish the first CSV file, then go for the second one, so on and so forth.
- Tags column in CSV should be in format of comma separated tags.