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https://ajitpatra.com/2020/09/16/d365-ce-error-while-activating-bpf-an-attribute-with-the-specified-name-already-exists-exception-message-column-names-in-each-table-must-be-unique-column-name-stageid-in-table-entityname/
D365 CE: Error while activating BPF "An attribute with the specified name already exists. Exception Message: Column names in each table must be unique. Column name 'stageid' in table 'EntityName' is specified more than once."