Behavior Change
Previous Behaviour: When PCF-initiated flow deletion procedure failed due to access side failures or timeouts, SMF used to retain the PCC rules that PCF sent for deletion.
New Behaviour: In case of a failure during PCF-initiated flow deletion procedure, the SMF deletes the PCC rules and communicates the details on the deleted PCC rules to UPF and PCF.
For more information, refer to the Network-initiated Session Modification Procedures chapter.