Remote procedure call parameters changed

I have my Application server behind F5. The application protocol is WCF - NetTcpBinding.

 

 

The parameters of the method call changed

 

 

from

 

processMethod(String, String, Int32)

 

to

 

processMethod( String, String, String)

 

 

 

Now the communication does work and throws an exception.

 

 

The existing service works fine, but when upgrade and install to new application service, it does not work.

 

 

Any thing doing wrong here?

 

 

Thanks