You can cancel a job only when the job is in the PENDING EXECUTION or RUNNING state.
Procedure
On the System Manager web console, click Services > Bulk Import and Export.
Click Import > User Management > Users.
Also, to gain access to Import users, from the System Manager web console, click Users > User Management. Click Manage Users and select More Actions > Import Users.
On the Import Users page, select the job from the table in the Manage Jobs section.