ORA-30771: Cannot add more than one referential constraint on REF column "

ORA-30771: Cannot add more than one referential constraint
on REF column "string"

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ORA-30771: Cannot add more than one referential constraint on REF column "string"..

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Cause: Multiple referential constraints were specified for a
single REF column.

Action: Remove the additional referential constraints and
retry the operation.

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