In my body of the request, I had this "xdmEntity", which I removed and it started working. See if you too have that. 

Hi @arpan-garg , I am using only 1 dataset. And yes my header does have flowid and dataset id. Below is what is not working for me:"operations":{        "data": "merge"    }Example: When i send email, firstname, lastname to create a record, i used "data":"create" then i used "data":"merge" to send, ...

Hi,  My data is: Email: abc@test.com, Firstname: abc, Lastname: xyzI want to change it to:  Email: abc@test.com, Firstname: abc, Lastname: xyz, City:Pune, Address:Halli Steps i followed:1)Created a dataset.2) Disabled for profiling3) Enabled for profiling and upsert. When i want to create a new reco...