wie können solche doppelten FSIDS beseitigt werden?
wie können sie überhaupt entstehen ??
Have you looked at it from within FamilySearch itself? I suspect you will find that there is no duplicate FSID inside FamilySearch.
I agree that the RM screen looks very puzzling. For that matter, I have always felt that there was something just ever so slightly off about the way FamilySearch Central presents its data. It talks about “already matched” immediately after doing a match that makes if feel like a warning to me, when in fact it’s not really a warning but only information,
So look into FamilySearch first, and then look back into RM. I think all that is happening is that RM is telling you that there are three possible matches between your RM person and people in FamilySearch, and that one of them is already matched.
I suspect that you are going to get a few more complete answers from other users who have managed to divine the mysteries of Family Search and Family Search Central better than I have.
What I suspect you did was first matched to a person on FamilySearch and then clicked on “Search for more matches”. In the list it will include the person you had just matched to. When the same person is selected again it will bring up the Possible Duplicate screen, where they will be listed as its own duplicate. It’s working as FamilySearch designed so just watch for your person already in the list and skip them.