NULL attribute mismatch for column '%1'

Error constant SQLE_OMNI_NULL_MISMATCH
ODBC 2 State OK
ODBC 3 State OK
Parameter 1 The name of the column.
Severity 16
SQLCODE –724
SQLSTATE WO018
Sybase error code 11211
Probable cause

The NULL attribute of the column specified in the CREATE EXISTING statement differs from the NULL attribute of the actual column.