I have customized a nornal SharePoint list with InfoPath that will not allow users to upload any attachments with special characters. However when I click on the Submit button, though the form cannot be submitted, a list entry is being created in the list.
How can I prevent the list from creating items? Is there a way that I can enforce a rule on the Submit button? If so how?
I have followed the following posts:
Though I'm getting the default pop-up, the data is submitted in the backend list