Diagnosis
An error occurred while calling the function moduleSAPWLN3_GET_DIRECTORY.

System Response
Error 1: only_one_selection_possible
Error 2: no_data_found
Error 3: internal_error
Error 4: rfc_problems
Error 5: funcmodule_not_found_in_monsys
Error 6: system_failure
Error 7: communication_failure
Error 8: sonstige

Procedure
Check the RFC connection for the remote system.