Azure Stream Analytics currently does not support two column with names only differing by case as input.//input data shopperId:1234567, shopperid:,//ASA returns InputDeserializerError error in input{Source:eventhubinput,Type:DataError,DataErrorType:InputDeserializerError.InvalidData,BriefMessage:Could not deserialize the input event(s) from resource 'Partition: [0], Offset: [12894685888], SequenceNumber: [104569]' as Json. Some possible reasons: 1) Malformed events 2) Input source configured with incorrect serialization format,Message:Input Message Id: Partition: [0], Offset: [12894685888], SequenceNumber: [104569] Error: Index was out of range. Must be non-negative and less than the size of the collection.\r\nParameter name: index,ExampleEventsASK to Azure Stream Analytics teamPlease consider to change Azure Stream Analytics to be able to handle case sensitive columns, just like Newtossoft.Json can handle. This is important for users who work with Elastic Common Schema and Azure Streaming Analytics.