If you’re trying to have Integration Server invoke a java service to write files, both mapped drives and UNC paths DO work. Typically the problem is permissions. For example, if the IS service is run under the Local System account, this account has no network privileges and will be unable to write to a network share. If this is your problem, try having the service run under a user account with write access to the appropriate directory. If this is not the problem, we would need more information about your environment and how you are trying to write the files to help.
Tim
#webMethods#Flow-and-Java-services#Integration-Server-and-ESB