Hi Alistair,

Thank you for your response.  I tried what you put above, but when I add it to the JavaScript the custom error message and submit button disable do not work.  Below is what I have.  Am I missing something?

Thank you for your help,

Vanessa

$(document).ready(
  function () 
  {    
    var formValid = true; //variable to determine if the form inputs are valid; used for custom errors
       
    $('.rowtotal input, .payamount input').change
    (
      function ()
      {
        if($('.paytype input').val() == 'Right of Way' && $('.rowtotal input').val() != $('.payamount input').val())
       {                                                                
          formValid = false;
          showCustomError('.rowtotal', 'Total must equal Amount.');
        }
        else
        {
          formValid = true;
          hideCustomError('.rowtotal');
        }
      }
    );
    
    $('input[type=submit]').click
    (
      function(e)
      {
        if(!formValid)
        {
          e.preventDefault(); //stop the form from being submitted
          showCustomError('.rowtotal', 'Total must equal Amount.');
        }
        else
        {
          hideCustomError('.rowtotal');
        }
      }
    );   
});

//Using the provided element selector and message, add an error message next to the field
function showCustomError(elementSelector, errorMessage)
{
  hideCustomError(elementSelector); //remove previous error
  
  $(elementSelector + ' input').addClass('custom-error');
  $(elementSelector + ' input').focus();
  $(elementSelector + ' input').parent().append('<p class="custom-error-message">' + errorMessage + '</p>');
}

//Hide the custom error generated by the showCustomError function
function hideCustomError(elementSelector)
{
  $(elementSelector + ' input').removeClass('custom-error');
  $(elementSelector + ' input').siblings('.custom-error-message').remove();
}

hmm, I can't see the issue looking at it there tbh. Could you send me a copy of the form? (It would just make it a little quicker to troubleshoot). In forms, go to the "Manage" tab, tick the process and press the download button in the top right. Then send me the xml that gets downloaded.