Once you have fixed a structured data issue, Google says you can click Validate fix on the issue details page, and that validation can take two weeks or more, depending on crawl frequency.
https://support.google.com/webmasters/answer/13300208The full answer on how to fix schema drift is here:
https://aiwebpageseo.com/blog/how-to-fix-schema-driftHow did you first notice your markup had changed, and how long did validation take for you?
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