Hi guys. trying to integrate our systewm with netSuite and i cant seem to find any example json that i should send for itemFulfillment and inventory adjustment.... is there anyone who can help me on this please?

The learning curve was steep! What I found really useful was the SuiteTalk REST Web Services PDF doc. It has a link to the REST Record browser which explains the fields. It also has a link to a Postman collection. I find a combination of creating a record in UI and doing a GETin Postman, plus using the metadata API useful to understand the pragmatic and full record JSON structures.