JSF validation errors

Below is the problem statement:

I have a page which has 5 radio buttons and 5 different types of Submit buttons.
User clicks on a radio and presses one of the Submit buttons(say CS), then user should be navigated to a different page displaying the details of the selected id(on the radio) like persons name,city etc...

Instead the page re-displays saying "Validation error:Value is not valid" (at the top of the page).

Error thrown on RAD IDE is as below:

"9/11/07 07:22:23:469 GMT] 00000046 jsf I com.sun.faces.context.FacesContextImpl addMessage Adding Message[sourceId=NONE,summary=Validation error:Value is not valid.)"

Thanks in advance.

"karthik kk",
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Thats the default error message that JSF throws when it actually should say something like "Hey, I was expecting a String but you passed in a integer"

What field is your radio button mapped to? Boolean or String or Int?

Thanks for the reply.

My radio button is mapped to a String and no where in the code i do some invalid conversions(like trying to use it has a int).