Recently, I have notice a multitude of transcription errors in Mass. Birth and Marriage records.
Here is an example
Massachusetts, Town Clerk, Vital and Town Records, 1626-2001," database with images, FamilySearch
2021), Marie R. Lamaire, 12 Feb 1877
The date is the same for all records on the page and all of the dates are incorrect with the wrong year. There are numerous other examples. I do not know if a new batch was put in the system, but, it is creating duplicate records of people and marriages with incorrect dates.