We received several reports that the CRA's Express NOA service was returning Error 108. This error message indicated that they had not yet validated the authorization to use the service, or that access was not authorized. The CRA has the following note on their Express NOA page:
The Express NOA service is available to deliver express notices of assessment year-round in EFILE and NETFILE-certified tax preparation software, except for April 30, 2018 and regularly scheduled system maintenance.
We have been informed that clients may continue to receive Error-ERR.108 on occasion while the CRA works through all the returns that were submitted on April 30th.