Hi @MattWho , I tried with invoke http. I made call to handleHttprequest . Issue still present. Doesn't look like any other External factors are affecting the header case.    In our implementation we read those flowfile attributes (which came as headers) In execute scripts. Which are giving error now.  ... View more

Hi @MattWho , Let me re frame my question like this. When API call is made to nifi where handleHttprequest accepts http requests, There are few attributes in request header (Example: "displayName"). These  Requests are received at handleHttprequest processor. When I check attributes of  Flowfile, I could see "http.headers.displayname" . Letter 'N' turned into lower case. But I need this to be in original form( http.headers.diplayName). We are currently on 2.0 M2.  Is there any configuration I'm missing due to which Request headers are turning into small case. ... View more