-79807

Numerical month value can not be determined from date string
based on DBDATE
This error occurs because the date string specified
does not have a valid numeric month designation as required by the DBDATE format
string setting. For example, if DBDATE is set
to Y2MD-, but the date string representation you
specify is 98-blah-15, this is an error, because blah is
not a valid numeric month representation.
To fix the problem, modify the date string representation
to include a valid numeric month designation (from 1 to 12) based
on the DBDATE format string setting.