After the suggestion from Khoa TruongDinh I made changes in
savePaymentInformationAndPlaceOrder() and followed this to implement order splitting but it's not working can anyone suggest me my mistakes.
I want to split order depending on no of items in Magento 2. I know in Magento 1.x it is possible by rewriting
Magento\Checkout\Model\Type\Onepage I tried the same way in Magento 2 but it is not working. I also tried to make changes directly in the core file for testing purpose only, but system not visiting
Can anyone please tell me why this is not visiting.
I enabled Onepage Checkout configuration in Admin.