Uipath form validations

PFA form design that I have created. I want to add the following validations. Could you tell me if this possible and if yes, how?

  1. While selecting a file, a user should be able to select only the excel file.
  2. On submit, the form should remain open until the user clicks on the close button.
  3. Add a provision to display an error message while processing the form.
  4. Empty field validations

Hi @vishal13987,
It should be possible. You can define an action for submit button which will trigger the sequence which will check each parameter. You just need to expose each form element using collection and in/out argument so the sequence will know what was added inside the form.