Oracle : Ошибка ORA-30336

"no child for specified JOIN KEY"
*Cause: The level specified in the REFERENCES portion of a JOIN KEY clause
in a dimension DDL statement does not have a child level.

*Action: Check the spelling of the level name referenced in the JOIN KEY
clause. If the referenced level is the first level in the
hierarchy, you need not and must not specify a JOIN KEY clause.

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