I talked to technical support lady for more than 2 hours over cobrowse. Still we didn't solve the problem. Looks like very complicated issues. I am doing my husband's return, entered same kind of amount box 52,53, 21 with no problem.

I asked if I can NETFILE with this error message, she said yes, but not sure about consequences. She will get back to me by tomorrow.

Interesting.  Guy I talked to said I couldn't NETFILE with error.  He was online with their tech support & they indicated that it's a software issue regarding the government's reversal on the Capital Gains tax increase they announced last year.  If you remember, they just announced a delay in its implementation recently & Turbo Tax hasn't updated the software yet.  Makes sense to me as the initial increase came into effect right around the end of June last year.  Hence the 2 dates (before & after June 24 & 25).  My guy said they will fix & send notice out.

Your guy and my lady have different ideas. I would like to go with your guy. Makes more sense.

I don't know why my husband's is OK but not mine. We have similar numbers in T3. So not everybody gets this glitch.

I created new account and started new fresh return, came out with same error. 

Always something goes wrong in beginning of tax season.

Thank you for sharing your experience.

NP.  Never thought of trying a new return.  I'll be patient & wait it out.

Thanks for the info & good luck

I have the same problem with my T3s.

Just called Turbotax and it's a known issue.  They say it should be fixed within a week or so.

Yep.   Was told fix coming 3rd week in March

@christianedesch if it is related to Capital gains or loss: Schedule 3 is still locked by CRA and not finalized by CRA yet. Please refer to this link Why does TurboTax say my forms are locked or haven't been finalized? 

We do not have any ETA on this yet but as soon a these forms gets finalize we will be updating them in TurboTax for an accurate calculations.

We appreciate your patience.

Have you got an answer yet. I am getting the same error for one of my T3 slips.

Supposed to be this week but CRA says by month end on their end.  No idea what TurboTax has to do.

CRA keeps updating the date. I heard  that it was supposed to be March 15; now the website says a few weeks. At least they have extended the date to file without penalty (if you have Capital gains) to June 2, so we have a little more time.