Exception while working with Tibco adapter for Tuxedo!!

Dear friends,:-)
Greetings!

I am facing an exception while working with "Tuxedo Adapter". 

I have installed TIBCO Adapter for Tuxedo on my machine which has both
bea_Client and Server. I am trying to do a PurchaseOrder POC, which is already
given in our TIBCO Adapter directory
(C:\TIBCO\adapter\adtuxedo\5.3\examples\AgentBased\PurchaseOrder).

The scenario goes like this, a request is sent from the Tuxedo client called
clt, which invokes the Tuxedo service, which in turn sends a request to the
adapter (“PublicationService”) through the adapter agent, and then the
adapter publishes the data to the TIBCO environment. TIBCO BW receives the data
using “Adapter Subscriber” and writes them to an XML output file named
Get_output.xml.

Problem in starting the Adapter - :(

When I tried to RUN the make.bat which is placed at the
“C:\TIBCO\adapter\adtuxedo\5.3\examples\AgentBased\PurchaseOrder” folder, it
throws me the error. 

At the time of executing this script, “buildclient -o clt -f client.c”, it
says that I don’t have a valid “TUXEDO SDK LICENSE”. The thrown exception
is, "TUXNT_CAT:101: ERROR: You do not have a valid TUXEDO SDK
license". 
 
Please tell me, is license Required to run the tux_client?

also,please clarify, while configuring “tibco.env.WSNADDR”(i.e., Workstation
Address of the Tuxedo server to connect to) I have given my machine IP ADDRESS
with a unique port. i.e., //10.103.18.120:4020. I am not sure with this step.
Please advice me! 

It would be great if you could please solve this issue.
Thanks in Advance,
Best Regards,