501: Data set name too long. Use MVS or z/OS UNIX data set naming conventions.

Explanation

The LIST or NLST command was entered with a data set name that was longer than the MVS™ maximum of 44 characters or the z/OS® UNIX maximum of 1023 characters.

System action

The LIST or NLST command is rejected.

User response

Reissue the LIST or NLST command with the correct data set or z/OS UNIX file name.

System programmer response

None.