The v2.91 release of the PS Suite custom form is a minor update to 2.90 that takes the additional step of 'checking in' the chart after a successful note download. This step will minimize the amount of time that Ocean has the chart checked out, consequently reducing the number of 'checkout conflicts' that show disruptive 'Override' messages within PS Suite.
If you are running 2.84 or 2.87, you should upgrade to 2.91 immediately. If you are on v2.72 and PS Suite 5.3 ("Fox"), we recommend that you hold off on upgrading for a week or two as this is a stable combination.
See the following article for more background on PS Suite integration guidance for sites on various versions of PS Suite, particularly advanced access versions: