You have the option of aborting a replication when it is in progress. You can abort the replication either from the Status Section in the List of Replication Jobs page or from the replication progress window.
Select the x mark in the status section to abort your replication schedule. From the Abort Replication pop-up window, click Yes.
Once you click Yes, the replication will be aborted successfully.
You can abort your replication if not required, from the Abort (-) option available in the progress window. You will get a popup window as shown below. Click OK to Abort your replication.
Once done aborting the replication job, Replication has been aborted successfully message will pop-up.