You do not need to delete the Task Sequence in order to delete the application from SCCM 2012. All you need to do is find the TS that has the app referenced. Select it, click âEDITâ. Find the fieled labeled âInstall Applicationsâ.o Go to the task sequences and look at the reference tab of each task sequence to see if the application is in the reference list. Look for the reference. After locating and deleting the task you are able to delete the application from Configuration Manager 2012. Delete the application!