Is it possible to go back to same user input task form again in a process model

While creating a case , i will click on validate button and  data will be sent to  Api to verify the GRU is correct or not ,if it is incorrect in the form i need to go back to same form to update the correct GRU

In my process model ,it is going back to user input task but the form is again asking for details to be entered but the want is i need to update the Gru and resubmit the form .

can someone please suggest how to achieve this