diff --git a/ns/NS_Tests.ttcn b/ns/NS_Tests.ttcn
index 7d99fa82a..733bad101 100644
--- a/ns/NS_Tests.ttcn
+++ b/ns/NS_Tests.ttcn
@@ -708,6 +708,25 @@ testcase TC_sns_sgsn_config_success() runs on RAW_Test_CT {
 	f_clean_ns_codec();
 }
 
+testcase TC_sns_sgsn_add() runs on RAW_Test_CT {
+	g_handle_rx_alive := true;
+	f_init_vty();
+	f_init_ns_codec(mp_nsconfig);
+	f_init_ns_codec(mp_nsconfig, 1);
+	f_outgoing_sns_size(max_nsvcs := 4, num_ip := 4);
+	f_outgoing_sns_config();
+	f_incoming_sns_config();
+	activate(as_rx_alive_tx_ack());
+
+	f_vty_config2(NSVTY, {"ns", "nse " & int2str(g_nsconfig.nsei)}, "ip-sns-bind local2");
+	f_incoming_sns_add(idx_add := 1);
+	as_rx_alive_tx_ack(oneshot := true, idx := 1);
+
+	setverdict(pass);
+	f_clean_ns_codec();
+}
+
+
 control {
 	if (mp_dialect == NS2_DIALECT_STATIC_RESETBLOCK or mp_dialect == NS2_DIALECT_IPACCESS) {
 		execute( TC_tx_reset() );
@@ -766,6 +785,7 @@ control {
 
 		if (mp_sns_role == SNS_ROLE_SGSN) {
 			execute( TC_sns_sgsn_config_success() );
+			execute( TC_sns_sgsn_add() );
 		}
 	}
 }