do you have any open cycle counts? They need to be closed/cancelled before a part can be added to a new cycle (Physcial is treated like a cycle with a special checkbox/flag called ‘physical’)
I’d go with what @MikeGross said one of those values in VT, MfgSys, RM-DIECT, 2020, 12, 1, 1, 831.010GHLAM is probably the cycle number. and you’ve probably already got one for Fiscal Period 12
Physical is a special thing, and shouldn’t necessarily be done twice a month, let alone more than once per year… Maybe, we’re confusing things here and they are doing “Cycle Counts” more than once per month - which would be perfectly normal.
My hypothesis still stands though - a part can only be on one cycle at a time. I would go through the cycles and see if you can find the open/incomplete one and cancel or delete it.
You should be able to find your open cycle counts using CC Maintenance and searching. I would used a variation of these two checkboxes just to be sure (unchecked, both checked, each checked)…