| ERROR | NULL or invalid blankCellValue |
| CAUSE | The blankCellValue element could not be found in the metadata of a blank GeoRaster object, or the specified blankCellValue element value was NULL or invalid. |
| ACTION | Call SDO_GEOR.setBlankCellValue to add blankCellValue to the metadata whenever the isBlank element value is TRUE, and make sure that the specified blankCellValue element value is not NULL and is in the range as designated by the cellDepth definition of the GeoRaster object. |