Google has posted that in Google Search Console your job posting errors may have changed. There may be a reduction in the general errors and Google may now show you more specific errors instead. The total number of errors should not change but how Google categorizes those errors may have changed.
On December 10th, Google wrote:
Search Console now reports more specific error types of Job Posting errors. Therefore you might see a reduction in certain generic error types, with a corresponding increase in new, more specific error types (if you have not already fixed those issues). The total number of errors should not change as a result of this update.
So if you take a quick look at your job postings report, you may now get more detailed errors that you can take action on.
Forum discussion at Google Webmaster Help.
