diff --git a/source/6LoWPAN/ws/ws_llc_data_service.c b/source/6LoWPAN/ws/ws_llc_data_service.c
index 306c90eed1ea..79748d453359 100644
--- a/source/6LoWPAN/ws/ws_llc_data_service.c
+++ b/source/6LoWPAN/ws/ws_llc_data_service.c
@@ -1259,6 +1259,16 @@ static void ws_llc_mpx_data_request(const mpx_api_t *api, const struct mcps_data
         return;
     }
 
+    if (!base->ie_params.hopping_schedule) {
+        tr_error("Missing FHSS configurations");
+        mcps_data_conf_t data_conf;
+        memset(&data_conf, 0, sizeof(mcps_data_conf_t));
+        data_conf.msduHandle = data->msduHandle;
+        data_conf.status = MLME_TRANSACTION_OVERFLOW;
+        user_cb->data_confirm(&base->mpx_data_base.mpx_api, &data_conf);
+        return;
+    }
+
     if (user_id == MPX_KEY_MANAGEMENT_ENC_USER_ID) {
         ws_llc_mpx_eapol_request(base, user_cb, data);
     } else if (user_id == MPX_LOWPAN_ENC_USER_ID) {
@@ -1643,10 +1653,11 @@ mpx_api_t *ws_llc_mpx_api_get(struct protocol_interface_info_entry *interface)
 int8_t ws_llc_asynch_request(struct protocol_interface_info_entry *interface, asynch_request_t *request)
 {
     llc_data_base_t *base = ws_llc_discover_by_interface(interface);
-    if (!base) {
+    if (!base || !base->ie_params.hopping_schedule) {
         return -1;
     }
 
+
     //Calculate IE Buffer size
     request->wh_requested_ie_list.fc_ie = false; //Never should not be a part Asynch message
     request->wh_requested_ie_list.rsl_ie = false; //Never should not be a part Asynch message