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Unknown build error, ‘An item with the same key has already been added.’
ERROR: there is no unique or exclusion constraint matching the ON CONFLICT specification Call getNextException to see other errors in the batch.
ERROR: column "a" of relation "table2" does not exist
本篇参考：https://help.salesforce.com/s/articleView?id=sf.flow_ref_elements_custom_error.htm&type=5我们针对
