diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index 3ea026f6e6..873adc0303 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -1038,7 +1038,7 @@ void fill_rf_config(RU_t *ru, char *rf_config_file) {
   openair0_config_t *cfg   = &ru->openair0_cfg;
   int mu = gNB_config->ssb_config.scs_common.value;
   int N_RB = gNB_config->carrier_config.dl_grid_size[gNB_config->ssb_config.scs_common.value].value;
-
+  N_RB = 106; // TODO: hard coding (change later)
   if (mu == NR_MU_0) { //or if LTE
     if(N_RB == 100) {
       if (fp->threequarter_fs) {
diff --git a/nfapi/README.md b/nfapi/README.md
index b45a9da76f..c02df565df 100644
--- a/nfapi/README.md
+++ b/nfapi/README.md
@@ -9,4 +9,21 @@
 ### 15/06/20
 * The values to config request are assigned in: `config_common()` in `config.c`
 * need to add lines for `cfg->nfapi_config`
-* the config request unpacked on pnf side still has some zero values, which causes assertional failure in from_nrarfcn()
\ No newline at end of file
+* the config request unpacked on pnf side still has some zero values, which causes assertional failure in from_nrarfcn()
+
+### 16/06/20
+* Config request is recived and unpacked correctly
+* Regarding config response
+    * we are confused about its' struct definition
+    * it says list of TLVs in its entirety
+    * and we need to dyanmically insert the invalid TLVs after checking in a categorical fashion
+    * Need to think of a data structure to enable this feature.
+    ```struct{
+    list of uint8_t tlvs
+    list of uint16_t tlvs
+    list of uint32_t tlvs
+    }list of tlvs
+    ```
+* Need the `N_RB` value to be non-zero and obtained from the config file. (carrier config grid size)
+`int N_RB = gNB_config->carrier_config.dl_grid_size[gNB_config->ssb_config.scs_common.value].value;`
+* how is this `gNB_config` assigned its values?
\ No newline at end of file
diff --git a/nfapi/oai_integration/nfapi_pnf.c b/nfapi/oai_integration/nfapi_pnf.c
index d06241bc46..fb855966f1 100644
--- a/nfapi/oai_integration/nfapi_pnf.c
+++ b/nfapi/oai_integration/nfapi_pnf.c
@@ -669,7 +669,7 @@ int param_request(nfapi_pnf_config_t *config, nfapi_pnf_phy_config_t *phy, nfapi
   memcpy(nfapi_resp.nfapi_config.p7_pnf_address_ipv4.address, &pnf_p7_sockaddr.sin_addr.s_addr, 4);
   nfapi_resp.num_tlv++;
   // P7 PNF Port
-printf("TAG value :%d",nfapi_resp.cell_param.phy_state.tl.tag);
+  printf("TAG value :%d",nfapi_resp.cell_param.phy_state.tl.tag);
   nfapi_pnf_param_resp(config, &nfapi_resp);
 
   printf("[PNF] Sent NFAPI_PNF_PARAM_RESPONSE phy_id:%d number_of_tlvs:%u\n", req->header.phy_id, nfapi_resp.num_tlv);
@@ -742,8 +742,11 @@ int config_request(nfapi_pnf_config_t *config, nfapi_pnf_phy_config_t *phy, nfap
   }
 
   if(req->nfapi_config.nrarfcn.tl.tag == NFAPI_NR_NFAPI_NRARFCN_TAG) {
-    fp->dl_CarrierFreq = from_nrarfcn(78, req->ssb_config.scs_common.value , req->nfapi_config.nrarfcn.value);
-    fp->ul_CarrierFreq = fp->dl_CarrierFreq - (get_nr_uldl_offset(fp->nr_band) * 1e5); // TODO: why 1e5 ?
+    // fp->dl_CarrierFreq = from_nrarfcn(78, req->ssb_config.scs_common.value , req->nfapi_config.nrarfcn.value);// TODO: get value nr_bandP
+    // fp->dl_CarrierFreq = req->carrier_config.dl_frequency.value;
+    // fp->ul_CarrierFreq = req->carrier_config.uplink_frequency.value;
+
+    //fp->ul_CarrierFreq = fp->dl_CarrierFreq - (get_nr_uldl_offset(fp->nr_band) * 1e5); // TODO: why 1e5 ?
     num_tlv++;
     NFAPI_TRACE(NFAPI_TRACE_INFO, "%s() nrarfcn:%u dl_carrierFreq:%u ul_CarrierFreq:%u band:%u N_RB_DL:%u\n",
                 __FUNCTION__, req->nfapi_config.nrarfcn.value, fp->dl_CarrierFreq, fp->ul_CarrierFreq, pnf->rfs[0].band, fp->N_RB_DL);
@@ -868,7 +871,7 @@ req->tdd_table.
   phy_info->remote_addr = inet_ntoa(vnf_p7_sockaddr.sin_addr);
   printf("[PNF] %d vnf p7 %s:%d timing %d %d %d\n", phy_info->id, phy_info->remote_addr, phy_info->remote_port,
          phy_info->timing_window, phy_info->timing_info_mode, phy_info->timing_info_period);
-  nfapi_config_response_t nfapi_resp;
+  nfapi_nr_config_response_scf_t nfapi_resp;
   memset(&nfapi_resp, 0, sizeof(nfapi_resp));
   nfapi_resp.header.message_id = NFAPI_CONFIG_RESPONSE;
   nfapi_resp.header.phy_id = phy_info->id;
@@ -1202,7 +1205,7 @@ nfapi_tx_request_t dummy_tx_req;
 
 nfapi_pnf_p7_subframe_buffer_t dummy_subframe;
 
-int start_request(nfapi_pnf_config_t *config, nfapi_pnf_phy_config_t *phy, nfapi_start_request_t *req) {
+int start_request(nfapi_pnf_config_t *config, nfapi_pnf_phy_config_t *phy,  nfapi_nr_start_request_scf_t *req) {
   printf("[PNF] Received NFAPI_START_REQ phy_id:%d\n", req->header.phy_id);
   nfapi_set_trace_level(NFAPI_TRACE_INFO);
   pnf_info *pnf = (pnf_info *)(config->user_data);
diff --git a/nfapi/oai_integration/nfapi_vnf.c b/nfapi/oai_integration/nfapi_vnf.c
index 512e99dea0..2021876638 100644
--- a/nfapi/oai_integration/nfapi_vnf.c
+++ b/nfapi/oai_integration/nfapi_vnf.c
@@ -1080,11 +1080,11 @@ int param_resp_cb(nfapi_vnf_config_t *config, int p5_idx, nfapi_nr_param_respons
   return 0;
 }
 
-int config_resp_cb(nfapi_vnf_config_t *config, int p5_idx, nfapi_config_response_t *resp) {
-  nfapi_start_request_t req;
+int config_resp_cb(nfapi_vnf_config_t *config, int p5_idx, nfapi_nr_config_response_scf_t *resp) {
+  nfapi_nr_start_request_scf_t req;
   printf("[VNF] Received NFAPI_CONFIG_RESP idx:%d phy_id:%d\n", p5_idx, resp->header.phy_id);
   printf("[VNF] Calling oai_enb_init()\n");
-  oai_enb_init();
+  oai_enb_init(); // TODO: change to gnb
   memset(&req, 0, sizeof(req));
   req.header.message_id = NFAPI_START_REQUEST;
   req.header.phy_id = resp->header.phy_id;
diff --git a/nfapi/open-nFAPI/nfapi/public_inc/nfapi_nr_interface_scf.h b/nfapi/open-nFAPI/nfapi/public_inc/nfapi_nr_interface_scf.h
index 08213ed5c9..e8aca7e447 100644
--- a/nfapi/open-nFAPI/nfapi/public_inc/nfapi_nr_interface_scf.h
+++ b/nfapi/open-nFAPI/nfapi/public_inc/nfapi_nr_interface_scf.h
@@ -501,7 +501,7 @@ typedef struct {
   nfapi_p4_p5_message_header_t  header;
   nfapi_nr_param_errors_e error_code;
   uint8_t num_invalid_tlvs;
-
+  // TODO: add list of invalid/unsupported TLVs (see Table 3.18)
    nfapi_vendor_extension_tlv_t  vendor_extension;
 } nfapi_nr_config_response_scf_t;
 
@@ -511,7 +511,7 @@ typedef struct {
 typedef struct {
 	nfapi_p4_p5_message_header_t header;
 	nfapi_vendor_extension_tlv_t vendor_extension;
-} nfapi_nr_start_request_t;
+} nfapi_nr_start_request_scf_t;
 
 typedef enum {
 	NFAPI_NR_START_MSG_INVALID_STATE
diff --git a/nfapi/open-nFAPI/nfapi/src/nfapi_p5.c b/nfapi/open-nFAPI/nfapi/src/nfapi_p5.c
index 5d89cdc268..fb92beca0a 100644
--- a/nfapi/open-nFAPI/nfapi/src/nfapi_p5.c
+++ b/nfapi/open-nFAPI/nfapi/src/nfapi_p5.c
@@ -857,15 +857,15 @@ static uint8_t pack_config_request(void *msg, uint8_t **ppWritePackedMsg, uint8_
 
 static uint8_t pack_config_response(void *msg, uint8_t **ppWritePackedMsg, uint8_t *end, nfapi_p4_p5_codec_config_t* config)
 {
-	nfapi_config_response_t *pNfapiMsg = (nfapi_config_response_t*)msg;
+	nfapi_nr_config_response_scf_t *pNfapiMsg = (nfapi_nr_config_response_scf_t*)msg;
 
-	return ( push32(pNfapiMsg->error_code, ppWritePackedMsg, end) &&
+	return ( push8(pNfapiMsg->error_code, ppWritePackedMsg, end) &&
 			 pack_vendor_extension_tlv(pNfapiMsg->vendor_extension, ppWritePackedMsg, end, config) );
 }
 
 static uint8_t pack_start_request(void *msg, uint8_t **ppWritePackedMsg, uint8_t *end, nfapi_p4_p5_codec_config_t* config)
 {
-	nfapi_start_request_t *pNfapiMsg = (nfapi_start_request_t*)msg;
+	nfapi_nr_start_request_scf_t *pNfapiMsg = (nfapi_nr_start_request_scf_t*)msg;
 	return pack_vendor_extension_tlv(pNfapiMsg->vendor_extension, ppWritePackedMsg, end, config);
 }
 
@@ -1591,7 +1591,7 @@ static uint8_t unpack_param_response(uint8_t **ppReadPackedMsg, uint8_t *end, vo
 
 	// print ppReadPackedMsg
 	uint8_t *ptr = *ppReadPackedMsg;
-	printf("\n Read message: ");
+	printf("\n Read message unpack_param_response: ");
 	while(ptr < end){
 		printf(" %d ", *ptr);
 		ptr++;
@@ -1786,19 +1786,19 @@ static uint8_t unpack_config_request(uint8_t **ppReadPackedMsg, uint8_t *end, vo
 
 static uint8_t unpack_config_response(uint8_t **ppReadPackedMsg, uint8_t *end, void *msg, nfapi_p4_p5_codec_config_t* config)
 {
-	nfapi_config_response_t *pNfapiMsg = (nfapi_config_response_t*)msg;
+	nfapi_nr_config_response_scf_t *pNfapiMsg = (nfapi_nr_config_response_scf_t*)msg;
 
 	unpack_tlv_t unpack_fns[] =
 	{
 	};
 
-	return ( pull32(ppReadPackedMsg, &pNfapiMsg->error_code, end) && 
+	return ( pull8(ppReadPackedMsg, &pNfapiMsg->error_code, end) && 
 			 unpack_tlv_list(unpack_fns, sizeof(unpack_fns)/sizeof(unpack_tlv_t), ppReadPackedMsg, end, config, &(pNfapiMsg->vendor_extension)));
 }
 
 static uint8_t unpack_start_request(uint8_t **ppReadPackedMsg, uint8_t *end, void *msg, nfapi_p4_p5_codec_config_t* config)
 {
-	nfapi_start_request_t *pNfapiMsg = (nfapi_start_request_t*)msg;
+	 nfapi_nr_start_request_scf_t *pNfapiMsg = ( nfapi_nr_start_request_scf_t*)msg;
 
 	unpack_tlv_t unpack_fns[] =
 	{
@@ -1952,8 +1952,8 @@ static int check_unpack_length(nfapi_message_id_e msgId, uint32_t unpackedBufLen
 			break;
 
 		case NFAPI_START_REQUEST:
-			if (unpackedBufLen >= sizeof(nfapi_start_request_t))
-				retLen = sizeof(nfapi_start_request_t);
+			if (unpackedBufLen >= sizeof( nfapi_nr_start_request_scf_t))
+				retLen = sizeof( nfapi_nr_start_request_scf_t);
 			break;
 
 		case NFAPI_START_RESPONSE:
@@ -2037,7 +2037,7 @@ int nfapi_p5_message_unpack(void *pMessageBuf, uint32_t messageBufLen, void *pUn
 	}
 
 	uint8_t *ptr = pReadPackedMessage;
-	printf("\n Read message: ");
+	printf("\n Read message unpack: ");
 	while(ptr < end){
 		printf(" %d ", *ptr);
 		ptr++;
diff --git a/nfapi/open-nFAPI/pnf/public_inc/nfapi_pnf_interface.h b/nfapi/open-nFAPI/pnf/public_inc/nfapi_pnf_interface.h
index dd041aaed7..008d11c996 100644
--- a/nfapi/open-nFAPI/pnf/public_inc/nfapi_pnf_interface.h
+++ b/nfapi/open-nFAPI/pnf/public_inc/nfapi_pnf_interface.h
@@ -193,7 +193,7 @@ typedef struct nfapi_pnf_config
 	 * 	The client is expected to send the START.response after the client has received the
 	 *  first subframe indication from FAPI.
 	 */
-	int (*start_req)(nfapi_pnf_config_t* config, nfapi_pnf_phy_config_t* phy, nfapi_start_request_t* req);
+	int (*start_req)(nfapi_pnf_config_t* config, nfapi_pnf_phy_config_t* phy,  nfapi_nr_start_request_scf_t* req);
 	
 	/*! A callback for the STOP.request
 	 *  \param config A pointer to the pnf configuration
@@ -413,7 +413,7 @@ int nfapi_pnf_param_resp(nfapi_pnf_config_t* config, nfapi_nr_param_response_scf
  * \return 0 for success, -1 for failure
  * 
  */
-int nfapi_pnf_config_resp(nfapi_pnf_config_t* config, nfapi_config_response_t* resp);
+int nfapi_pnf_config_resp(nfapi_pnf_config_t* config, nfapi_nr_config_response_scf_t* resp);
 
 /*! Send the START.response
  * \param config A pointer to a pnf configuraiton
diff --git a/nfapi/open-nFAPI/pnf/src/pnf.c b/nfapi/open-nFAPI/pnf/src/pnf.c
index 0563d4029f..2bc8320466 100644
--- a/nfapi/open-nFAPI/pnf/src/pnf.c
+++ b/nfapi/open-nFAPI/pnf/src/pnf.c
@@ -411,7 +411,7 @@ void pnf_handle_start_request(pnf_t* pnf, void *pRecvMsg, int recvMsgLen)
 	}
 	else
 	{
-		nfapi_start_request_t req;
+		 nfapi_nr_start_request_scf_t req;
 	
 		nfapi_pnf_config_t* config = &(pnf->_public);
 	
diff --git a/nfapi/open-nFAPI/pnf/src/pnf_interface.c b/nfapi/open-nFAPI/pnf/src/pnf_interface.c
index e1c9add2f4..4b8a154f1f 100644
--- a/nfapi/open-nFAPI/pnf/src/pnf_interface.c
+++ b/nfapi/open-nFAPI/pnf/src/pnf_interface.c
@@ -182,7 +182,7 @@ int nfapi_pnf_param_resp(nfapi_pnf_config_t* config, nfapi_nr_param_response_scf
 	return pnf_pack_and_send_p5_message(_this, &(resp->header), sizeof(nfapi_nr_param_response_scf_t));
 }
 
-int nfapi_pnf_config_resp(nfapi_pnf_config_t* config, nfapi_config_response_t* resp)
+int nfapi_pnf_config_resp(nfapi_pnf_config_t* config, nfapi_nr_config_response_scf_t* resp)
 {
 	if (config == NULL || resp == NULL)
 	{
@@ -207,7 +207,7 @@ int nfapi_pnf_config_resp(nfapi_pnf_config_t* config, nfapi_config_response_t* r
 		return -1;
 	}
 
-	return pnf_pack_and_send_p5_message(_this, &(resp->header), sizeof(nfapi_config_response_t));
+	return pnf_pack_and_send_p5_message(_this, &(resp->header), sizeof(nfapi_nr_config_response_scf_t));
 }
 
 int nfapi_pnf_start_resp(nfapi_pnf_config_t* config, nfapi_start_response_t* resp)
diff --git a/nfapi/open-nFAPI/vnf/public_inc/nfapi_vnf_interface.h b/nfapi/open-nFAPI/vnf/public_inc/nfapi_vnf_interface.h
index 1d37accf1b..5091eb5d5b 100644
--- a/nfapi/open-nFAPI/vnf/public_inc/nfapi_vnf_interface.h
+++ b/nfapi/open-nFAPI/vnf/public_inc/nfapi_vnf_interface.h
@@ -19,7 +19,7 @@
 
 #include "nfapi_interface.h"
 #include "nfapi_nr_interface_scf.h"
- 	#include "nfapi_nr_interface.h"
+#include "nfapi_nr_interface.h"
 
 #include "debug.h"
 
@@ -549,7 +549,7 @@ int nfapi_vnf_config_req(nfapi_vnf_config_t* config, int p5_idx, nfapi_nr_config
  * \param req A pointer to a START.request message structure
  * \return  0 means success, -1 failure
  */
-int nfapi_vnf_start_req(nfapi_vnf_config_t* config, int p5_idx, nfapi_start_request_t* req);
+int nfapi_vnf_start_req(nfapi_vnf_config_t* config, int p5_idx, nfapi_nr_start_request_scf_t* req);
 
 /*! Send the STOP.request
  * \param config A pointer to a vnf config
diff --git a/nfapi/open-nFAPI/vnf/src/vnf_interface.c b/nfapi/open-nFAPI/vnf/src/vnf_interface.c
index fb5dd07e52..2ceb9c1e8f 100644
--- a/nfapi/open-nFAPI/vnf/src/vnf_interface.c
+++ b/nfapi/open-nFAPI/vnf/src/vnf_interface.c
@@ -565,14 +565,14 @@ int nfapi_vnf_config_req(nfapi_vnf_config_t* config, int p5_idx, nfapi_nr_config
 
 	return vnf_pack_and_send_p5_message(_this, p5_idx, &req->header, sizeof(nfapi_nr_config_request_scf_t));
 }
-int nfapi_vnf_start_req(nfapi_vnf_config_t* config, int p5_idx, nfapi_start_request_t* req)
+int nfapi_vnf_start_req(nfapi_vnf_config_t* config, int p5_idx, nfapi_nr_start_request_scf_t * req)
 {
 	if(config == 0 || req == 0)
 		return -1;
 
 	vnf_t* _this = (vnf_t*)(config);
 
-	return vnf_pack_and_send_p5_message(_this, p5_idx, &req->header, sizeof(nfapi_start_request_t));
+	return vnf_pack_and_send_p5_message(_this, p5_idx, &req->header, sizeof(nfapi_nr_start_request_scf_t));
 }
 int nfapi_vnf_stop_req(nfapi_vnf_config_t* config, int p5_idx, nfapi_stop_request_t* req)
 {