You will see the following error message in H&R Block’s tax software if you entered an age amount for your spouse or common-law that is higher than the maximum specified by your province of residence:

Your spouse's or common-law partner's provincial age amount can't be more than ${1}. Make sure you entered the amount shown on his/her 2017 provincial 428 form correctly. [error code: 150].

How do I fix this?

Enter the correct age amount shown on your spouse’s or common-law partner’s completed provincial tax form.