Oracle Message IMG-02012 - 2FF12 - illegal specification for thumbnail generation

ERROR2FF12 - illegal specification for thumbnail generation
CAUSEThere was a SQL/MM Still Image exception. Either the specified image format did not support thumbnail generation, the specified thumbnail height or width was greater than the image height or width respectively, or the default thumbnail size 80 X 80 was greater than the image height or width respectively.
ACTIONSpecify an image for which thumbnail generation is supported and specify thumbnail height and width values that are less than the image height and width values. Refer to the SI_INFORMTN_SCHEMA views and the Oracle Multimedia documentation for a list of supported thumbnail formats.