You may require a different set of actions when the matching records from an alternate source don't have a valid ID or have no ID; this would be the case for external sources like Acxiom.
当来自备用源的匹配记录不包含有效的 ID 或者没有 ID时,您可能需要进行一组不同的操作,对于外部源,如 Acxiom,便是这种情况。