Bad Request - The specifed resource name contains invalid characters.

Encountered below error when triggered the  pipeline which moves data  from SQL to Azure Data Lake Store Gen2 and writes a csv file
Error

Activity Copy DataFromSQL failed: ErrorCode=UserErrorFailedBlobFSOperation,'Type=Microsoft.DataTransfer.Common.Shared.HybridDeliveryException,Message=BlobFS operation failed for: Operation returned an invalid status code 'BadRequest'. Account: 'adls2adf'. FileSystem: 'EMPARCHIVE'. ErrorCode: 'InvalidResourceName'. Message: 'The specifed resource name contains invalid characters.'. RequestId: '8a0437a7-201f-0008-4ac7-1e3e47000000'.,Source=Microsoft.DataTransfer.ClientLibrary,''Type=Microsoft.Azure.Storage.Data.Models.ErrorSchemaException,Message=Operation returned an invalid status code 'BadRequest',Source=Microsoft.DataTransfer.ClientLibrary,'



Why it happened


 The error actually is pointing out that there is some invalid characters in the file path.
incorrect file path


As can be seen in above image name of container,directory and filename are all in Uppercase, however the error points to the name given to the container i.e. EMPARCHIVE. And it is because uppercase is not yet supported for container name.



What to do


You need to use lowercase alphabets also there is support for numbers for providing name to container. There is no such restriction on Directory/ foldername. 
correct file path in ADLS gen2

 Output file was created after correcting the container name.



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