Butolyun,
I havent found what the actual meaning of OSM is. It is another one of the cryptic DS message codes. I'll take a wild guess and say it means "Operating System Message". On all the apars related to the message code, the problem always occurs when a File/Save operation is attempted. Usually when an "Edit" saving something to the clipboard is performed (copy or paste), the error will occur when trying to do a File/Save. HD70810 is indicating that the problem should be corrected in R17 SP8 and R18 SP4. Also, please indicate if your customer is running 32 or 64 bit.
Here is the scenario reported in HD70810........
1. Open the "Sample.CATPart".
2. Select the "Body.123" and select the "Copy"
from the contextual menu.
3. Select the "Part.1" and select the "Paste" from
the contextual menu. Update Diagnosis appears.
Click Close on this panel.
4. Select the "File / Save". OSM_S244 error
appears and cannot save the data.