Oracle Solution for Error ora-54529

ORA-54529: geometry should have multi-level hierarchy (like triangle)

What triggered the Error:

The geometry did not have the multi-level hierarchy required for this operation. For example, if the parameter to element extractor (hierarchy level) is not LOWER_LEVEL, but the geometry etype is ETYPE_SOLID and gtype is GTYPE_SOLID, an extract operation is not allowed, because a simple solid can only be decomposed into lower level geometries, such as composite surfaces.

What should we do to fix it:

Ensure that the geometry has the appropriate hierarchy. For example, if the geometry etype is ETYPE_SOLID and gtype is GTYPE_SOLID, the parameter to element extractor (hierarchy level) should be LOWER_LEVEL.