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Some Spatial operations (Ops) fail when using a RasterDescriptor or FeatureClassDescriptor object, which is created with an invalid query filter.
RasterDescriptor and FeatureClassDescriptor objects do not evaluate a query filter when they are created. Calling Spatial operation objects may fail, if the input parameters contain RasterDescriptor or FeatureClassDescriptor objects that are defined using an invalid query filter.
Check the syntax of the 'where' clause in the query filter, and make sure the query filter is valid when passing it to the descriptors.