Originally posted by Angelo Bonaparte:
Is there a way to append request parameters(Not attributes) withing an action without creating a new forward?
The short answer to this question is no. When You get a forward using the findForward method, it's actually a ForwardConfig, which is immutable.
However, the ActionRedirect has a constructor that will accept an immutable forward and clone it to create a new one. Example:
Regarding your error: Are you sure you're copying all the required parameters? You may be getting the error because you missed one or more of them. If the above doesn't fix it, post your code, and we'll help you debug it. Also, show us the first few lines of the stack trace and the full message you're getting.