@Nihal Mulani
I'm planning on using platform event -> middleware -> netsuite and script -> middleware -> salesforce with a generically typed class interface, for sales order, items, and invoice. Did you follow any sort of guide or template when you were running? I'm struggling to find a holistic implementation guide, sort of figuring it out as I go. Lots of the tools, like boomi, are polling every minute... not a huge fan of that architecture