I have completed and netfiled a return and have missed adding the T5007 slips (there are 2). Can I retrieve the netfiled return to complete it?

 

After you file

If you have already NETFILED your income tax, you will need to file an adjustment request.  Please see the following FAQ for instructions on how to file an adjustment request.

https://turbotax.community.intuit.ca/replies/2647992