Finally got split payment working on the live site!
But one small issue remains – when the buyer abandons the transaction halfway, and an order is already created in WooCommerce as “pending”, if he/she returns later and wants to purchase again, the person cannot do it with split payment. In the error log, it shows:
[message] => The tracking ID CT-6675 already exists and can’t be duplicated
The person can only do it when the order is deleted / canceled in WooCommerce, either manually or waiting for the system to do it automatically but it takes time.
Is there any way to work around this?