different Delivery API reponse for Campaign / Postman with the same tntId

[Michael_Soprano]

I am using Target Delivery API. For the same payload in Postman I got the reponse like this:

In the Campaign V8 Client Console response is like this (already put into email):

Do you have any ideas why Target do this? How to resolve this? Why Target do this even though payload headers look the same?