ORA-37186: null child value for parent ([string]) found in parent-child hierarchy

Cause: While reading values for a parent-child hierarchy, a NULL child value was found for a non-NULL parent

Action: Correct the source table or SQL to return value parent and child pairs.

Error Type: ORA

• Additional information for ORA-37186: null child value for parent ([string]) found in parent-child hierarchy37186
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