Hier noch etwas:

I receive message FTP 501 - Use MVS Dataset Name Convention when doing FTP from the IBM Power Systems to an IBM MVS system. The Power Systems is the client.

Resolution:
To resolve the problem, do the following:
1 FTP to the MVS system.
2 Type BIN .
3 Type PUT and ensure that there are triple single quotes (three apostrophes), ''', around the data set name.