EV 11 and Fragmentation warning

Hi,

ALL of the EV 11 installation I have done in the last months results in the same after a month:

Fragmentation warning for indexes

When we approach the DBA team they run check and say all is ok.

even after running re-index, after a week or two the events are returning.

Anything special regarding this check?

Should we ignore it? should I change the threshold?

Sarah