diff --git a/srsgnb/hdr/stack/ric/e2ap.h b/srsgnb/hdr/stack/ric/e2ap.h
index 6c7e707ef..afb10ada8 100644
--- a/srsgnb/hdr/stack/ric/e2ap.h
+++ b/srsgnb/hdr/stack/ric/e2ap.h
@@ -60,8 +60,11 @@ public:
   e2_ap_pdu_c generate_setup_request();
   int         process_setup_response(e2setup_resp_s setup_response);
   int         process_setup_failure();
-  int         process_subscription_request(ricsubscription_request_s subscription_request);
-  int         process_ric_subscription_delete_request(ricsubscription_delete_request_s ricsubscription_delete_request);
+  int         process_subscription_request(ricsubscription_request_s ric_subscription_request);
+  int         process_subscription_delete_request(ricsubscription_delete_request_s ricsubscription_delete_request);
+  int         process_subscription_modification_request(uint32_t ric_subscription_modification_request);
+  int         process_subscription_modification_confirm(uint32_t ric_subscription_modification_confirm);
+  int         process_subscription_modification_refuse(uint32_t ric_subscription_modification_refuse);
   e2_ap_pdu_c generate_subscription_response(ric_subscription_reponse_t ric_subscription_reponse);
   e2_ap_pdu_c generate_subscription_failure(ric_subscription_reponse_t ric_subscription_reponse);
   e2_ap_pdu_c generate_subscription_delete_response(ric_subscription_reponse_t ric_subscription_reponse);
diff --git a/srsgnb/hdr/stack/ric/e2ap_ric_subscription.h b/srsgnb/hdr/stack/ric/e2ap_ric_subscription.h
index 180f08dae..4c192effc 100644
--- a/srsgnb/hdr/stack/ric/e2ap_ric_subscription.h
+++ b/srsgnb/hdr/stack/ric/e2ap_ric_subscription.h
@@ -34,9 +34,9 @@ public:
   void start_subscription();
   void delete_subscription();
 
-  bool handle_subscription_modification_request(uint32_t ric_subscription_modification_request);
-  bool handle_subscription_modification_confirm(uint32_t ric_subscription_modification_confirm);
-  bool handle_subscription_modification_refuse(uint32_t ric_subscription_modification_refuse);
+  bool process_subscription_modification_request(uint32_t ric_subscription_modification_request);
+  bool process_subscription_modification_confirm(uint32_t ric_subscription_modification_confirm);
+  bool process_subscription_modification_refuse(uint32_t ric_subscription_modification_refuse);
 
 private:
   void     _send_subscription_response();
diff --git a/srsgnb/hdr/stack/ric/ric_client.h b/srsgnb/hdr/stack/ric/ric_client.h
index 28c998d66..ef754985d 100644
--- a/srsgnb/hdr/stack/ric/ric_client.h
+++ b/srsgnb/hdr/stack/ric/ric_client.h
@@ -67,6 +67,10 @@ public:
   bool handle_e2_setup_response(e2setup_resp_s setup_response);
   bool handle_ric_subscription_request(ricsubscription_request_s ric_subscription_request);
   bool handle_ric_subscription_delete_request(ricsubscription_delete_request_s ricsubscription_delete_request);
+  bool handle_subscription_modification_request(uint32_t ric_subscription_modification_request);
+  bool handle_subscription_modification_confirm(uint32_t ric_subscription_modification_confirm);
+  bool handle_subscription_modification_refuse(uint32_t ric_subscription_modification_refuse);
+
   bool handle_reset_response(reset_resp_s& reset_response);
   bool handle_reset_request(reset_request_s& reset_request);
 
diff --git a/srsgnb/src/stack/ric/e2ap.cc b/srsgnb/src/stack/ric/e2ap.cc
index 8efd7d593..53d2a59c2 100644
--- a/srsgnb/src/stack/ric/e2ap.cc
+++ b/srsgnb/src/stack/ric/e2ap.cc
@@ -260,7 +260,7 @@ int e2ap::process_subscription_request(ricsubscription_request_s ric_subscriptio
   return SRSRAN_SUCCESS;
 }
 
-int e2ap::process_ric_subscription_delete_request(ricsubscription_delete_request_s ricsubscription_delete_request)
+int e2ap::process_subscription_delete_request(ricsubscription_delete_request_s ricsubscription_delete_request)
 {
   bool ric_subs_found = false;
   for (auto it = active_subscriptions.begin(); it != active_subscriptions.end(); it++) {
@@ -280,6 +280,24 @@ int e2ap::process_ric_subscription_delete_request(ricsubscription_delete_request
   return SRSRAN_SUCCESS;
 }
 
+int e2ap::process_subscription_modification_request(uint32_t ric_subscription_modification_request)
+{
+  // TODO: implement, here only placeholder
+  return SRSRAN_SUCCESS;
+}
+
+int e2ap::process_subscription_modification_confirm(uint32_t ric_subscription_modification_confirm)
+{
+  // TODO: implement, here only placeholder
+  return SRSRAN_SUCCESS;
+}
+
+int e2ap::process_subscription_modification_refuse(uint32_t ric_subscription_modification_refuse)
+{
+  // TODO: implement, here only placeholder
+  return SRSRAN_SUCCESS;
+}
+
 e2_ap_pdu_c e2ap::generate_indication(ric_indication_t& ric_indication)
 {
   using namespace asn1::e2ap;
diff --git a/srsgnb/src/stack/ric/e2ap_ric_subscription.cc b/srsgnb/src/stack/ric/e2ap_ric_subscription.cc
index 79e54cc1b..3ee8f5a22 100644
--- a/srsgnb/src/stack/ric/e2ap_ric_subscription.cc
+++ b/srsgnb/src/stack/ric/e2ap_ric_subscription.cc
@@ -161,21 +161,21 @@ void e2ap::ric_subscription::delete_subscription()
   parent->queue_send_e2ap_pdu(send_pdu);
 }
 
-bool e2ap::ric_subscription::handle_subscription_modification_request(uint32_t ric_subscription_modification_request)
+bool e2ap::ric_subscription::process_subscription_modification_request(uint32_t ric_subscription_modification_request)
 {
-  // TODO: available in e2ap-v3
+  // TODO: implement, currently not supported in ans1
   return false;
 }
 
-bool e2ap::ric_subscription::handle_subscription_modification_confirm(uint32_t ric_subscription_modification_confirm)
+bool e2ap::ric_subscription::process_subscription_modification_confirm(uint32_t ric_subscription_modification_confirm)
 {
-  // TODO: available in e2ap-v3
+  // TODO: implement, currently not supported in ans1
   return false;
 }
 
-bool e2ap::ric_subscription::handle_subscription_modification_refuse(uint32_t ric_subscription_modification_refuse)
+bool e2ap::ric_subscription::process_subscription_modification_refuse(uint32_t ric_subscription_modification_refuse)
 {
-  // TODO: available in e2ap-v3
+  // TODO: implement, currently not supported in ans1
   return false;
 }
 
diff --git a/srsgnb/src/stack/ric/ric_client.cc b/srsgnb/src/stack/ric/ric_client.cc
index 6d6257c1f..f56d177d7 100644
--- a/srsgnb/src/stack/ric/ric_client.cc
+++ b/srsgnb/src/stack/ric/ric_client.cc
@@ -316,7 +316,7 @@ bool ric_client::handle_ric_subscription_delete_request(ricsubscription_delete_r
               ricsubscription_delete_request->ri_crequest_id->ric_instance_id,
               ricsubscription_delete_request->ra_nfunction_id->value);
 
-  if (e2ap_.process_ric_subscription_delete_request(ricsubscription_delete_request)) {
+  if (e2ap_.process_subscription_delete_request(ricsubscription_delete_request)) {
     logger.error("Failed to process RIC subscription delete request \n");
     return false;
   }
@@ -324,6 +324,31 @@ bool ric_client::handle_ric_subscription_delete_request(ricsubscription_delete_r
   return true;
 }
 
+bool ric_client::handle_subscription_modification_request(uint32_t ric_subscription_modification_request)
+{
+  if (e2ap_.process_subscription_modification_request(ric_subscription_modification_request)) {
+    logger.error("Failed to process RIC subscription delete request \n");
+    return false;
+  }
+  return true;
+}
+bool ric_client::handle_subscription_modification_confirm(uint32_t ric_subscription_modification_confirm)
+{
+  if (e2ap_.process_subscription_modification_confirm(ric_subscription_modification_confirm)) {
+    logger.error("Failed to process RIC subscription delete request \n");
+    return false;
+  }
+  return true;
+}
+bool ric_client::handle_subscription_modification_refuse(uint32_t ric_subscription_modification_refuse)
+{
+  if (e2ap_.process_subscription_modification_refuse(ric_subscription_modification_refuse)) {
+    logger.error("Failed to process RIC subscription delete request \n");
+    return false;
+  }
+  return true;
+}
+
 bool ric_client::handle_reset_request(reset_request_s& reset_request)
 {
   printf("Received E2AP E2 Reset Request \n");