Back Ground Job not showing in SM50,

Hi Friends,

I am running XK99 to Mass update Vendor details in Back ground, I am getting some error while running the job in back ground, I would like debugg the issue.

But in SM50 Iam not able to see the job I sechduled using program MASSBACK or transaction XK99.

Please let me know, what could be the problem.

Thanks,

Veerendra.