In the public records topic of Germany, Preußen, Hessen-Nassau, Schlüchtern-Kreis, Brandenstein, the entry for the Eheprotokolle year 1819 should read 1817-1819.
We've been told in replies to other suggestions for catalog corrections that FS's catalog is undergoing major maintenance and no corrections are currently possible. (If anybody has mentioned a specific timeline for finishing said maintenance, I haven't seen it.)
I was doing research on deeds from Somerset County, Maryland in the catalog in Land records, 1665-1850
and discovered an error in which the camera link for "Liber SH 1839-1841 Liber AH 1841-1843" (film 14392) is pointing to the wrong film. It brings up death certificates rather than deeds.
As Julia says, no specific time-period for the exercise has been mentioned, but as this article is dated August 2020 one would hope the completion date is not too far off.