CBR6417I End of Data has been reached while {reading | writing} Object name objname, in collection collname, on volume volser.
Explanation
OAM is processing read or write commands for volume volser and the device has returned that end of data has been reached. The object objname and collection collname are provided to assist you in diagnosing the problem. OAM does not expect to encounter end of data when reading or writing an object. This could indicate a volume or drive problem and must be investigated.
System action
OAM continues processing.
Operator response
Notify the system programmer.
System programmer response
Investigate the problem with the tape volume to determine if it is a volume or drive problem. If it turns out to be a problem with the volume, the MODIFY OAM,UPDATE,VOLUME command can be used to indicate to OAM that the volume is not readable or writable as appropriate. Refer to z/OS DFSMS OAM Planning, Installation, and Storage Administration Guide for Object Support for information on using the MODIFY OAM,UPDATE,VOLUME command.
Source
Object Access Method (OAM)
Routing Code
2,3,5
Descriptor Code
4