Hi,
Go to /SAPAPO/OM13, go to checks tab and see whether you have any error there. If yes you will have information icon. Click the same and cross-check.
Though there is one SAP note, cross check the same.
1816930 - Short dump BCD_NO_SIGN in func. /SAPAPO/OM_FETCH_CLASSCONT_
Regards
Rahul