Solution: After a quick google you might find this page instructing you to run the schedule in the foreground. This is great unless the schedule is full of other nodes and you can't run it any time during the day. Instead, I checked the schedule details on the TSM server console;
q sched domainname schedulename
The schedule was referencing an object on the node to be backed up. When I verified the path and filename discovered a typo.
Using the update schedule command I fixed the path;
update sched domainname schedulename
Note: In order to get quotes around the path you need to enclose the quotes on the front/end with a single quote. ie. singlequote doublequote string doublequote singlequote