diff --git a/openair2/LAYER2/NR_MAC_UE/config_ue.c b/openair2/LAYER2/NR_MAC_UE/config_ue.c
index 2e0e0b23fd..7b8113da49 100644
--- a/openair2/LAYER2/NR_MAC_UE/config_ue.c
+++ b/openair2/LAYER2/NR_MAC_UE/config_ue.c
@@ -672,6 +672,17 @@ void config_control_ue(NR_UE_MAC_INST_t *mac){
 
 }
 
+// todo handle mac_LogicalChannelConfig
+int nr_rlc_mac_config_req_ue_logicalChannelBearer(
+    module_id_t                     module_id,
+    int                             cc_idP,
+    uint8_t                         gNB_index,
+    long                            logicalChannelIdentity){
+    NR_UE_MAC_INST_t *mac = get_mac_inst(module_id);
+    mac->logicalChannelBearer_exist[logicalChannelIdentity] = true;
+    return 0;
+}
+
 int nr_rrc_mac_config_req_ue(
     module_id_t                     module_id,
     int                             cc_idP,
diff --git a/openair2/LAYER2/NR_MAC_UE/mac_defs.h b/openair2/LAYER2/NR_MAC_UE/mac_defs.h
index b1b07dbd29..28818bf307 100644
--- a/openair2/LAYER2/NR_MAC_UE/mac_defs.h
+++ b/openair2/LAYER2/NR_MAC_UE/mac_defs.h
@@ -409,6 +409,9 @@ typedef struct {
 
   /// BSR report flag management
   uint8_t BSR_reporting_active;
+
+  /// LogicalChannelConfig has bearer.
+  boolean_t logicalChannelBearer_exist[NR_MAX_NUM_LCID];
   NR_UE_SCHEDULING_INFO   scheduling_info;
 
   /// PHR
diff --git a/openair2/LAYER2/NR_MAC_UE/mac_proto.h b/openair2/LAYER2/NR_MAC_UE/mac_proto.h
index 6d133cbce6..1f5fc02df7 100644
--- a/openair2/LAYER2/NR_MAC_UE/mac_proto.h
+++ b/openair2/LAYER2/NR_MAC_UE/mac_proto.h
@@ -78,6 +78,18 @@ int8_t nr_ue_decode_BCCH_DL_SCH(module_id_t module_id,
                                 uint8_t *pduP,
                                 uint32_t pdu_len);
 
+/**\brief primitive from RLC layer to MAC layer to set if bearer exists for a logical channel. todo handle mac_LogicalChannelConfig
+   \param module_id                 module id
+   \param cc_id                     component carrier id
+   \param gNB_index                 gNB index
+   \param long                      logicalChannelIdentity*/
+int nr_rlc_mac_config_req_ue_logicalChannelBearer(
+	    module_id_t                 module_id,
+	    int                         cc_idP,
+	    uint8_t                     gNB_index,
+	    long                        logicalChannelIdentity
+);
+
 /**\brief primitive from RRC layer to MAC layer for configuration L1/L2, now supported 4 rrc messages: MIB, cell_group_config for MAC/PHY, spcell_config(serving cell config)
    \param module_id                 module id
    \param cc_id                     component carrier id
diff --git a/openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c b/openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c
index 3dfe11f1ca..e6706aae56 100644
--- a/openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c
+++ b/openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c
@@ -1109,7 +1109,7 @@ NR_UE_L2_STATE_t nr_ue_scheduler(nr_downlink_indication_t *dl_info, nr_uplink_in
   // Handle the SR/BSR procedures per subframe
   NR_UE_MAC_INST_t *mac = get_mac_inst(mod_id);
   uint8_t gNB_indexP=0;
-#if 0
+#if 0 // todo
   // Get RLC status info and update Bj for all lcids that are active
   int lcid;     // lcid index
   for (lcid = DCCH; lcid < NR_MAX_NUM_LCID; lcid++) {
@@ -1251,7 +1251,7 @@ nr_update_bsr(module_id_t module_idP, frame_t frameP,
   //Get Buffer Occupancy and fill lcid_reordered_array
   for (lcid=DCCH; lcid < NR_MAX_NUM_LCID; lcid++) {
     //if (mac->logicalChannelConfig[lcid]) {
-    if (1) {
+    if (mac->logicalChannelBearer_exist[lcid] ) { // todo
       lcgid = mac->scheduling_info.LCGID[lcid];
 
       // Store already available data to transmit per Group
@@ -1281,7 +1281,7 @@ nr_update_bsr(module_id_t module_idP, frame_t frameP,
 
           do {
             //if (mac->logicalChannelConfig[lcid]->ul_SpecificParameters->priority <= highest_priority) {
-            if (1) {
+            if (1) { // todo
               //Insert if priority is higher or equal (lower or equal in value)
               for (pos_next=num_lcid_with_data-1; pos_next > array_index; pos_next--) {
                 lcid_reordered_array[pos_next] = lcid_reordered_array[pos_next - 1];
diff --git a/openair2/LAYER2/nr_rlc/nr_rlc_oai_api.c b/openair2/LAYER2/nr_rlc/nr_rlc_oai_api.c
index a10c029bd2..a9053e0acd 100644
--- a/openair2/LAYER2/nr_rlc/nr_rlc_oai_api.c
+++ b/openair2/LAYER2/nr_rlc/nr_rlc_oai_api.c
@@ -37,6 +37,7 @@
 #include "NR_RLC-Config.h"
 #include "common/ran_context.h"
 #include "NR_UL-CCCH-Message.h"
+#include "openair2/LAYER2/NR_MAC_UE/mac_proto.h"
 
 #include "openair2/F1AP/f1ap_du_rrc_message_transfer.h"
 
@@ -270,8 +271,8 @@ mac_rlc_status_resp_t mac_rlc_status_ind(
                         + buf_stat.retx_size
                         + buf_stat.tx_size;
   } else {
-    if (!(frameP%128)) //to supress this warning message
-      LOG_D(RLC, "[%s] Radio Bearer (channel ID %d) is NULL for UE with rntiP %x\n", __FUNCTION__, channel_idP, rntiP);
+    if (!(frameP%128)) //to suppress this warning message
+      LOG_W(RLC, "[%s] Radio Bearer (channel ID %d) is NULL for UE with rntiP %x\n", __FUNCTION__, channel_idP, rntiP);
     ret.bytes_in_buffer = 0;
   }
 
@@ -334,6 +335,8 @@ rlc_buffer_occupancy_t mac_rlc_get_buffer_occupancy_ind(
         + buf_stat.retx_size
         + buf_stat.tx_size;
   } else {
+    if (!(frameP%128)) //to suppress this warning message
+      LOG_W(RLC, "[%s] Radio Bearer (channel ID %d) is NULL for UE with rntiP %x\n", __FUNCTION__, channel_idP, rntiP);
     ret = 0;
   }
 
@@ -934,6 +937,9 @@ rlc_op_status_t nr_rrc_rlc_config_asn1_req (const protocol_ctxt_t   * const ctxt
             if(rlc_bearer2add_list->list.array[j]->servedRadioBearer->present == NR_RLC_BearerConfig__servedRadioBearer_PR_srb_Identity){
               if(srb2add_listP->list.array[i]->srb_Identity == rlc_bearer2add_list->list.array[j]->servedRadioBearer->choice.srb_Identity){
                 add_rlc_srb(rnti, srb2add_listP->list.array[i], rlc_bearer2add_list->list.array[j]);
+                LOG_I(RLC, "[FRAME %05d][RLC_UE][MOD %02d][][--- MAC_CONFIG_REQ (SRB%ld gNB %d) --->][MAC_UE][MOD %02d][]\n",
+         	       ctxt_pP->frame, ctxt_pP->module_id, rlc_bearer2add_list->list.array[j]->logicalChannelIdentity, 0, ctxt_pP->module_id);
+                nr_rlc_mac_config_req_ue_logicalChannelBearer(ctxt_pP->module_id,0,0,rlc_bearer2add_list->list.array[j]->logicalChannelIdentity);
               }
             }
           }
@@ -946,16 +952,19 @@ rlc_op_status_t nr_rrc_rlc_config_asn1_req (const protocol_ctxt_t   * const ctxt
   if ((drb2add_listP != NULL) && (rlc_bearer2add_list != NULL)) {
     for (i = 0; i < drb2add_listP->list.count; i++) {
       if (rlc_bearer2add_list != NULL) {
-      for(j = 0; j < rlc_bearer2add_list->list.count; j++){
-        if(rlc_bearer2add_list->list.array[j]->servedRadioBearer != NULL){
-          if(rlc_bearer2add_list->list.array[j]->servedRadioBearer->present == NR_RLC_BearerConfig__servedRadioBearer_PR_drb_Identity){
-            if(drb2add_listP->list.array[i]->drb_Identity == rlc_bearer2add_list->list.array[j]->servedRadioBearer->choice.drb_Identity){
-              add_drb(rnti, drb2add_listP->list.array[i], rlc_bearer2add_list->list.array[j]);
+        for(j = 0; j < rlc_bearer2add_list->list.count; j++){
+          if(rlc_bearer2add_list->list.array[j]->servedRadioBearer != NULL){
+            if(rlc_bearer2add_list->list.array[j]->servedRadioBearer->present == NR_RLC_BearerConfig__servedRadioBearer_PR_drb_Identity){
+              if(drb2add_listP->list.array[i]->drb_Identity == rlc_bearer2add_list->list.array[j]->servedRadioBearer->choice.drb_Identity){
+                add_drb(rnti, drb2add_listP->list.array[i], rlc_bearer2add_list->list.array[j]);
+                LOG_I(RLC, "[FRAME %05d][RLC_UE][MOD %02d][][--- MAC_CONFIG_REQ (DRB%ldles gNB %d) --->][MAC_UE][MOD %02d][]\n",
+                   ctxt_pP->frame, ctxt_pP->module_id, rlc_bearer2add_list->list.array[j]->logicalChannelIdentity, 0, ctxt_pP->module_id);
+                nr_rlc_mac_config_req_ue_logicalChannelBearer(ctxt_pP->module_id,0,0,rlc_bearer2add_list->list.array[j]->logicalChannelIdentity);
+              }
             }
-          }  
+          }
         }
       }
-      }
     }
   }