Hi @huydungktv and welcome to the Community!
First off, here’s our Developer Docs on the recommended data structure for Placed Order if you haven’t seen it:
Since Klaviyo automatically syncs with Shopify and the event data is passed according to the pre-determined structure, it will usually take some dedicated development work to match the data organization. This will come down to both how your API requests are structured, as well as the structure and available information on the e-commerce store’s side. However, the example API calls in these docs offer a great starting point.
Since this sounds like a custom integration, it may be useful to reach out to one of our wonderful Klaviyo Partners if you need further development help.
Thanks for using the Community!
- Brian