Missing Required Headers error

Am getting this error 'Missing Required Headers' in the response. But I can see in the Raw Request, that the Headers are sent.

Here is the raw request :

Client_id and client_secret are the headers that are being sent.

POST https://abc.com/trec/restconsumer/v1/profile.do HTTP/1.1
Accept-Encoding: gzip,deflate
Content-Type: application/json
transaction_id: It8dozMcOKNx5HgfcvXkZXoUYM8k7Bxzmfms0n7faEbyELDXv
Host: abc.com
Accept-Encoding: gzip,deflate
Content-Type: application/json
transaction_id: It8dozMcOKNx5HgfcvXkZXoUYM8k7Bxzmfms0n7faEbyELDXv
client_secret: abc
client_id: abc
Content-Length: 1997
Host: abc.com
Connection: Keep-Alive
User-Agent: Apache-HttpClient/4.1.1 (java 1.5)

My colleague has posted the exact same request with the headers and his test seems to run fine. 

This same test worked few months ago with older version of SOAP. My current version is SOAPUI 5.5.0 . I tried uninstalling SOAPUI 5.5.0 and installed SOAPUI 5.4.0. Still no luck. Can you please help.