diff --git a/EMEA_PREPROD/alerting/CD_CDE-Challenge_INT.tf b/EMEA_PREPROD/alerting/CD_CDE-Challenge_INT.tf
deleted file mode 100644
index 3ca6009e..00000000
--- a/EMEA_PREPROD/alerting/CD_CDE-Challenge_INT.tf
+++ /dev/null
@@ -1,37 +0,0 @@
-data "dynatrace_management_zone" "CD_CDE-Challenge_INT"{ name="CD_CDE-Challenge" }
-resource "dynatrace_alerting" "CD_CDE-Challenge_INT" {
-  name            = "CD_CDE-Challenge INT"
-  management_zone = data.dynatrace_management_zone.CD_CDE-Challenge_INT.id
-  rules {
-    rule {
-      delay_in_minutes = 0
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "AVAILABILITY"
-      tags             = [ "Environment:INT" ]
-    }
-    rule {
-      delay_in_minutes = 10
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "CUSTOM_ALERT"
-      tags             = [ "Environment:INT" ]
-    }
-    rule {
-      delay_in_minutes = 10
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "ERRORS"
-      tags             = [ "Environment:INT" ]
-    }
-    rule {
-      delay_in_minutes = 30
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "PERFORMANCE"
-      tags             = [ "Environment:INT" ]
-    }
-    rule {
-      delay_in_minutes = 30
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "RESOURCE_CONTENTION"
-      tags             = [ "Environment:INT" ]
-    }
-  }
-}
diff --git a/EMEA_PREPROD/alerting/CD_CDE-Challenge_TEST.tf b/EMEA_PREPROD/alerting/CD_CDE-Challenge_TEST.tf
deleted file mode 100644
index d3cf17dd..00000000
--- a/EMEA_PREPROD/alerting/CD_CDE-Challenge_TEST.tf
+++ /dev/null
@@ -1,37 +0,0 @@
-data "dynatrace_management_zone" "CD_CDE-Challenge_TEST"{ name="CD_CDE-Challenge" }
-resource "dynatrace_alerting" "CD_CDE-Challenge_TEST" {
-  name            = "CD_CDE-Challenge TEST"
-  management_zone = data.dynatrace_management_zone.CD_CDE-Challenge_TEST.id
-  rules {
-    rule {
-      delay_in_minutes = 0
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "AVAILABILITY"
-      tags             = [ "Environment:TEST" ]
-    }
-    rule {
-      delay_in_minutes = 10
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "CUSTOM_ALERT"
-      tags             = [ "Environment:TEST" ]
-    }
-    rule {
-      delay_in_minutes = 10
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "ERRORS"
-      tags             = [ "Environment:TEST" ]
-    }
-    rule {
-      delay_in_minutes = 30
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "PERFORMANCE"
-      tags             = [ "Environment:TEST" ]
-    }
-    rule {
-      delay_in_minutes = 30
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "RESOURCE_CONTENTION"
-      tags             = [ "Environment:TEST" ]
-    }
-  }
-}
diff --git a/EMEA_PROD/alerting/CD_CDE-Challenge_E2E.tf b/EMEA_PROD/alerting/CD_CDE-Challenge_E2E.tf
deleted file mode 100644
index 9893f6d9..00000000
--- a/EMEA_PROD/alerting/CD_CDE-Challenge_E2E.tf
+++ /dev/null
@@ -1,37 +0,0 @@
-data "dynatrace_management_zone" "CD_CDE-Challenge_E2E"{ name="CD_CDE-Challenge" }
-resource "dynatrace_alerting" "CD_CDE-Challenge_E2E" {
-  name            = "CD_CDE-Challenge E2E"
-  management_zone = data.dynatrace_management_zone.CD_CDE-Challenge_E2E.id
-  rules {
-    rule {
-      delay_in_minutes = 0
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "AVAILABILITY"
-      tags             = [ "Environment:E2E" ]
-    }
-    rule {
-      delay_in_minutes = 10
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "CUSTOM_ALERT"
-      tags             = [ "Environment:E2E" ]
-    }
-    rule {
-      delay_in_minutes = 10
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "ERRORS"
-      tags             = [ "Environment:E2E" ]
-    }
-    rule {
-      delay_in_minutes = 30
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "PERFORMANCE"
-      tags             = [ "Environment:E2E" ]
-    }
-    rule {
-      delay_in_minutes = 30
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "RESOURCE_CONTENTION"
-      tags             = [ "Environment:E2E" ]
-    }
-  }
-}
diff --git a/EMEA_PROD/alerting/CD_CDE-Challenge_PROD.tf b/EMEA_PROD/alerting/CD_CDE-Challenge_PROD.tf
deleted file mode 100644
index d10517de..00000000
--- a/EMEA_PROD/alerting/CD_CDE-Challenge_PROD.tf
+++ /dev/null
@@ -1,37 +0,0 @@
-data "dynatrace_management_zone" "CD_CDE-Challenge_PROD"{ name="CD_CDE-Challenge" }
-resource "dynatrace_alerting" "CD_CDE-Challenge_PROD" {
-  name            = "CD_CDE-Challenge PROD"
-  management_zone = data.dynatrace_management_zone.CD_CDE-Challenge_PROD.id
-  rules {
-    rule {
-      delay_in_minutes = 0
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "AVAILABILITY"
-      tags             = [ "Environment:PROD" ]
-    }
-    rule {
-      delay_in_minutes = 10
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "CUSTOM_ALERT"
-      tags             = [ "Environment:PROD" ]
-    }
-    rule {
-      delay_in_minutes = 10
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "ERRORS"
-      tags             = [ "Environment:PROD" ]
-    }
-    rule {
-      delay_in_minutes = 30
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "PERFORMANCE"
-      tags             = [ "Environment:PROD" ]
-    }
-    rule {
-      delay_in_minutes = 30
-      include_mode     = "INCLUDE_ALL"
-      severity_level   = "RESOURCE_CONTENTION"
-      tags             = [ "Environment:PROD" ]
-    }
-  }
-}