diff --git a/CN_PROD/slo/Wirkkette_Teleservices_Reliability_of_key_requests.tf b/CN_PROD/slo/Wirkkette_Teleservices_Reliability_of_key_requests.tf
index 09a883a..ec624d7 100644
--- a/CN_PROD/slo/Wirkkette_Teleservices_Reliability_of_key_requests.tf
+++ b/CN_PROD/slo/Wirkkette_Teleservices_Reliability_of_key_requests.tf
@@ -12,15 +12,7 @@ module Wirkkette_Teleservices_Reliability_of_key_requests {
 
     #metric expression of the calculation as done in data explorer ui
     metric_expression           = <<-EOT
-    (func:slo.teleservices_calltopic
-    + func:slo.teleservices_joynr
-    + func:slo.teleservices_kai
-    + func:slo.teleservices_kinesis
-    + func:slo.teleservices_mqs
-    + func:slo.teleservices_ngtp_01
-    + func:slo.teleservices_ngtp_02
-    + func:slo.teleservices_seam)
-    /8
+(((26) * (func:slo.teleservices_all_except_kai_service)) + ((1) * (func:slo.teleservices_kai:default(100)))) / (27)
 
 EOT
 
diff --git a/EMEA_PROD/slo/Wirkkette_Teleservices_Reliability_of_key_requests.tf b/EMEA_PROD/slo/Wirkkette_Teleservices_Reliability_of_key_requests.tf
index 09a883a..ec624d7 100644
--- a/EMEA_PROD/slo/Wirkkette_Teleservices_Reliability_of_key_requests.tf
+++ b/EMEA_PROD/slo/Wirkkette_Teleservices_Reliability_of_key_requests.tf
@@ -12,15 +12,7 @@ module Wirkkette_Teleservices_Reliability_of_key_requests {
 
     #metric expression of the calculation as done in data explorer ui
     metric_expression           = <<-EOT
-    (func:slo.teleservices_calltopic
-    + func:slo.teleservices_joynr
-    + func:slo.teleservices_kai
-    + func:slo.teleservices_kinesis
-    + func:slo.teleservices_mqs
-    + func:slo.teleservices_ngtp_01
-    + func:slo.teleservices_ngtp_02
-    + func:slo.teleservices_seam)
-    /8
+(((26) * (func:slo.teleservices_all_except_kai_service)) + ((1) * (func:slo.teleservices_kai:default(100)))) / (27)
 
 EOT
 
diff --git a/NA_PROD/slo/Wirkkette_Teleservices_Reliability_of_key_requests.tf b/NA_PROD/slo/Wirkkette_Teleservices_Reliability_of_key_requests.tf
index 09a883a..ec624d7 100644
--- a/NA_PROD/slo/Wirkkette_Teleservices_Reliability_of_key_requests.tf
+++ b/NA_PROD/slo/Wirkkette_Teleservices_Reliability_of_key_requests.tf
@@ -12,15 +12,7 @@ module Wirkkette_Teleservices_Reliability_of_key_requests {
 
     #metric expression of the calculation as done in data explorer ui
     metric_expression           = <<-EOT
-    (func:slo.teleservices_calltopic
-    + func:slo.teleservices_joynr
-    + func:slo.teleservices_kai
-    + func:slo.teleservices_kinesis
-    + func:slo.teleservices_mqs
-    + func:slo.teleservices_ngtp_01
-    + func:slo.teleservices_ngtp_02
-    + func:slo.teleservices_seam)
-    /8
+(((26) * (func:slo.teleservices_all_except_kai_service)) + ((1) * (func:slo.teleservices_kai:default(100)))) / (27)
 
 EOT