Behavior Change

UP now sends the PFCP error cause code PFCP_CAUSE_NO_RESOURCE_AVAILABLE in the following failure scenarios during:

  • Sx Establishment Request and Sx Modification request message processing

    • Bearer stream creation failure for Sxa

    • TEP row add failure for Sxa

    • Local local_gtpu_endpt address mismatch or unavailable

    • Above failure scenarios for N4 visited call

  • PFCP_IE_QGR_INFO IE processing memory failures

  • NAT rulebase change or policy change cases and failure due to

    • FW-and-NAT policy initilization failure during call setup or rulebase change

    • Invalid clp destination context

    • Memory allocation failure

  • Sx Establishment or Sx Modification message processing – local GTPU TEID allocation failure

Previous Behavior: UP sent the error cause PFCP_CAUSE_REQUEST_REJECTED for the above failure scenarios.

New Behavior: UP sends the error cause PFCP_CAUSE_NO_RESOURCE_AVAILABLE instead of PFCP_CAUSE_REQUEST_REJECTED for the above failure scenarios.