HRALXSYNC Background job is cancelled

Hi,

I scheduled HRALXSYNC report in background but it is executed for some time and then it is Canceled and the job type is execute immediately.

Here am pasting the details of scheduled job.

Date Time Message text

08/30/2011 07:09:52 Job started

08/30/2011 07:09:52 Step 001 started (program HRALXSYNC, variant SAP&DEFAULT, user ID SHAIKSJ)

08/30/2011 07:17:34 Enter at least one number for the business partner

08/30/2011 07:17:34 Job cancelled after system exception ERROR_MESSAGE

Note: Here this background job run as "changes since".

Can any suggest me how to solve this issue.

Thanks in advance

Saleem