Oracle Message IMG-02004 - 2FF04 - incorrect feature list specification

ERROR2FF04 - incorrect feature list specification
CAUSEThere was a SQL/MM Still Image exception. Either the specified feature values were invalid or the specified feature weights were invalid.
ACTIONCheck the values of feature and featureweight pairs. For a non null feature value, the corresponding feature weight value must be a double precision number greater than 0.0. Refer to the Oracle Multimedia documentation for more information on the SI_FeatureList object type and its methods.