Download an older version of Adobe Acrobat Reader (11.0.10).Mac users: the new version of Adobe Acrobat Reader (DC) may cause some issues.There are also two known technical issues: Make sure to remove any spaces in fields that should be empty by pressing the backspace or delete button you may have entered by mistake. You cannot use special characters on our forms including spaces. You entered special characters into the form. entering a future date for your birth date.using a date in the past for the date you plan to travel to Canada.You won’t be able to validate the form if you enter conflicting dates, such as: The dates you entered are conflicting or not in the right format.ĭates must be entered in the format of (YYYY-MM-DD) If any are not complete, you won’t be able to validate the form When you click on the validation button, the PDF checks that you entered all the mandatory fields. Mandatory fields are those marked with an asterisk (*). You’re missing information in mandatory fields. The barcode forms don’t work on these kinds of devices. You’re using a cellphone, tablet or other mobile device. You need Adobe Acrobat Reader 10 (or higher) to use them. The forms you need to validate use special encoding. Your version of Adobe Acrobat Reader is out of date. There are a few reasons this could happen.