EnsLib.RecordMap.Service.FTPService class error

Hi, Community!

I am trying to create a business service that takes a csv through a FTP server and pass it to a business process.  So,  I have created a registration map for the CSV file and the business service which extends from the EnsLib.RecordMap.Service.FTPService .  When I try to configure the business service in the FilePath section I enter the FTP server path and it connects without problems,  the problem appears when I assign the ArchivePath path, which is also inside the server. When I do that, I get an error which says that the pathway doesn't exists. I have tried not to specify the ArchivePath but when I enter a file  the business service does not process it

Can anyone answer why this is happening?

Thanks.