Make sure that the RRSP contribution is being deducted at Line 208. Verify that you had sufficient taxable income (Line 260) to use the RRSP contribution and that your total non-refundable credits (Line 335) do not exceed your taxable income.
You can find a detailed summary of your tax return under the "Review" tab > "Bottom Line (tax summaries)"> then look for the paper and magnifying glass icon in the lower left hand corner, select "Detailed Tax Summary". You will have a line by line sample of the Federal Tax Return. Provincial summary can be found under the "Provincial" tab.