Explanation

(dsname) or (dsname/password ...) is a required positional parameter that specifies the name of the data set or list of data set names that you want to back up. Passwords are not supported for SMS-managed data sets.

For dsname, substitute the name of the data set or list of data set names you want to back up. You can use a data set filter for any dsname in a list. For a discussion of how to specify data set names, see Specifying data set names.

For non-SMS data sets, specifying a filter requests only cataloged, not uncataloged, data sets. If you want to back up an uncataloged data set, you must specify its data set name explicitly.

For password, substitute the correct password and include the preceding slash (/). TSO does not prompt you for the password.

For password-protected non-VSAM data sets, you must supply the password that allows you to write to the data set.
For password-protected VSAM data sets, you must supply the master password of the base cluster.