diff --git a/ttcn/AtsImsIot/AtsImsIot_TestConfiguration.ttcn b/ttcn/AtsImsIot/AtsImsIot_TestConfiguration.ttcn
index 237f8314eb96c7170ec3a1d73c4f41194252ff51..0e1161ad2e7d00a84ad9f99fd80b7feefa5fc8be 100644
--- a/ttcn/AtsImsIot/AtsImsIot_TestConfiguration.ttcn
+++ b/ttcn/AtsImsIot/AtsImsIot_TestConfiguration.ttcn
@@ -76,6 +76,8 @@ module AtsImsIot_TestConfiguration {
 		const charstring c_s6a := "S6a";
 		//* interface monitor name Rx
 		const charstring c_gx := "Gx";
+		//* interface monitor name Mm/Mx/Mw
+		const charstring c_psap := "Psap";
 	}
 	
 	group mappingFunctions {