diff --git a/openair2/RRC/NR_UE/rrc_UE.c b/openair2/RRC/NR_UE/rrc_UE.c
index 176427c4ce..55a608e2dd 100755
--- a/openair2/RRC/NR_UE/rrc_UE.c
+++ b/openair2/RRC/NR_UE/rrc_UE.c
@@ -2329,6 +2329,8 @@ nr_rrc_ue_decode_dcch(
                                             gNB_indexP,
                                             dl_dcch_msg->message.choice.c1->choice.rrcReconfiguration->rrc_TransactionIdentifier);
 #ifdef ITTI_SIM
+                //wait send RRCReconfigurationComplete and InitialContextSetupResponse
+                sleep(1);
                 as_nas_info_t initialNasMsg;
                 memset(&initialNasMsg, 0, sizeof(as_nas_info_t));
                 generateRegistrationComplete(&initialNasMsg, NULL);
@@ -2341,6 +2343,8 @@ nr_rrc_ue_decode_dcch(
                     itti_send_msg_to_task(TASK_RRC_NRUE, ctxt_pP->instance, message_p);
                     LOG_I(NR_RRC, " Send NAS_UPLINK_DATA_REQ message(RegistrationComplete)\n");
                 }
+                //wait send RegistrationComplete
+                usleep(100*150);
                 as_nas_info_t pduEstablishMsg;
                 memset(&pduEstablishMsg, 0, sizeof(as_nas_info_t));
                 generatePduSessionEstablishRequest(&pduEstablishMsg);
diff --git a/openair3/NGAP/ngap_gNB_nas_procedures.c b/openair3/NGAP/ngap_gNB_nas_procedures.c
index 8d0c0adab5..2e482f7098 100644
--- a/openair3/NGAP/ngap_gNB_nas_procedures.c
+++ b/openair3/NGAP/ngap_gNB_nas_procedures.c
@@ -858,6 +858,7 @@ int ngap_gNB_initial_ctxt_resp(
         initial_ctxt_resp_p->gNB_ue_ngap_id,
         ue_context_p->amf_ue_ngap_id);
     /* UE associated signalling -> use the allocated stream */
+    LOG_I(NR_RRC,"Send message to sctp: NGAP_InitialContextSetupResponse\n");
     ngap_gNB_itti_send_sctp_data_req(ngap_gNB_instance_p->instance,
                                      ue_context_p->amf_ref->assoc_id, buffer,
                                      length, ue_context_p->tx_stream);