This is currently a known issue with CRA. 

"The Canada Revenue Agency (CRA) is aware of this issue and has advised that this error occurs on T1 returns with an amount on line 22200 and no amount on line 31000, where the taxpayer has over $68,500 in pensionable earnings.
The CRA is actively working on resolution."

Ohh I See. Thank you!

@triserenity We are aware of this issue; we are working with the CRA for a resolution. We appreciate your patience.

Has there been any updates on this error?  I am receiving the same message.

@MattK3 Please follow these steps: User Fix steps: Review T4 slip:

1. If box 10 indicates Quebec as the province of employment: Verify that boxes 16 and 16A are empty.
2. If box 10 indicates a province other than Quebec: Verify that boxes 17 and 17A are empty.

I am having the same issue and I have verified the information I've entered is in the correct positions.

That's how mine is entered.  I reviewed my T4 online with a live agent and everything is entered correctly.

As I have said I filled out everything in the correct positions. Box 10 is not Quebec so I entered my information for box 16 and 16A.

Box 17 and 17A are blank. But the error still persists.

Do you know when this issue is expected to be fixed?  I just tried filing again (first tried 2 weeks ago) and got the error 90308 again.  Province of employment not Quebec and boxes 16 and 16A filled out (17 and 17A blank).  I called TurboTax support when I first got the error 2 weeks ago and was told it should be fixed within a week.

Is there any update on this issue?