The common error could be:

1. The SIN and the surname you entered are not a match in CRA records. 
2. Using a maiden name or married name that has not been updated on CRA records. If this is the case, the individual should visit: Update your CRA information: Change your name OR Update your CRA information: Change your marital status 
3. Smith Catherine was reported but should be Catherine smith in the typing field. Or Surname has not been entered on the slip.

For more information please see our TurboTax FAQ How do I resolve error codes?

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I imported my profile from the previous year and nothing has changed since last year. I haven’t made changes with CRA. If all of the warnings it was the only one there wasn’t an ignore button for after I checked.