It’s not uncommon for you to hit a snag or two while preparing your return. With that in mind, we’ve put together a list of some of the most common errors you’re likely to see using H&R Block’s tax software along with the steps you can take to fix them. Should you see the following rejection message when you try to file your return, consult the list below to make sure the information you entered is correct:

One or more entries in your tax return require correction. Ensure all field information is entered and look for invalid characters.

1. You might have entered a phone number that starts with 0. You can quickly verify the phone number you entered by clicking the GET STARTED tab and then clicking the Your mailing address link. 
   
   
2. You might have forgotten to tell us what your marital status was on December 31, 2016. Select your marital status by clicking the GET STARTED tab and then clicking the Your family link. Remember, even if you’re single, this field can’t be left empty.
   
   
3. You might have forgotten to answer the question, ‘As a Canadian citizen, do you authorize the Canada Revenue Agency to give your name, address, date of birth, and citizenship to Elections Canada to update the National Register of Electors?’. You can answer this question by clicking the GET STARTED tab and then clicking the Your residence link.
   
   Important: If you’re a non-Canadian citizen, you’ll need to answer No to this question.
   
   
4. You might have accidentally declared that you were a first-time filer (and you’re not). If so, you can change your answer on the CRA questions page on the PREPARE tab under the OTHER tab.