Xml error code:502(Invalid pid encryption)

[Jnanasagar H G]

Hi Team, 

I downloaded the source code from developer portal which is supporting authentication api 1.6 and i modified it to support authentication api 2.5 by referring 

authentication api 2.5 api doc now am getting Xml error code:502(Invalid pid encryption). Am sure am not doing any mistake in session key generation or in encryption place because the source code is from developer portal,but am not able to find where am doing wrong.. I have spent lot of time on this please help.

I have attached request before sign, after sign, pid block and response.

and i also gone through https://groups.google.com/forum/#!topic/aadhaarauth/OKqQHda8ufI

and https://groups.google.com/forum/#!topic/aadhaarauth/aggiJsLEA-w topis but no luck.

Thanks in advance