hi …
Actually there is file uploading from this form … so i had to set the type => file as for cakephp guidelines .
Still I have removed the type => file property … still has the same problem …
Secondly, the error happens at the time of form - submission .
If I pass the this function name in : $this->Security->unlockedActions , Then there is no error and it is working fine but in that case the form is vulnerable to CSRF attack .
So i had to OFF : $this->Security->unlockedActions
Surprisingly , the request does not reach the controller . So there must be something in the view !!!