The Cancel Line functionality in Service Level Rules (P4277760) only works at the time of Fulfillment Release (R4277703). Also, the Cancel Y/N Flag on the Service Level Rules only comes into play when the Minimum Fill percentages are less than 100% and the Service Level Rule is satisfied.

 

Please reference Cancel Y/N in Service Level Rules Does Not Cause Line To Cancel (Doc ID 1948844.1) for detail explanation.