--- charts-original/templates/configmap.yaml
+++ charts/templates/configmap.yaml
@@ -5,16 +5,18 @@
 {{- if and .Values.prom2teams.connector (hasKey .Values.prom2teams.connectors "Connector") -}}
 {{- fail "Invalid configuration: prom2teams.connectors can't have a connector named Connector when prom2teams.connector is set"}}
 {{- end -}}
-{{- if and (not .Values.prom2teams.connector) (not .Values.prom2teams.connectors) -}}
-{{- fail "Invalid configuration: At least one connector must be provided"}}
-{{- end -}}
+{{/* Create the configmap when the operation is helm install and the target configmap does not exist. */}}
+{{- if not (lookup "v1" "ConfigMap" (include "prom2teams.namespace" . ) (include "prom2teams.fullname" .)) }}
 apiVersion: v1
 kind: ConfigMap
 metadata:
-  name: prom2teams-config
-  labels:
-    app.kubernetes.io/managed-by: {{ .Release.Service }}
-    app.kubernetes.io/instance: {{ .Release.Name }}
+  namespace: {{ include "prom2teams.namespace" . }}
+  name: {{ include "prom2teams.fullname" . }}
+  labels: {{ include "prom2teams.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": pre-install, pre-upgrade
+    "helm.sh/hook-weight": "3"
+    "helm.sh/resource-policy": keep
 data:
   config.ini: |-
     [HTTP Server]
@@ -33,4 +35,5 @@
     Level: {{ .Values.prom2teams.loglevel }}
     [Template]
     Path: {{ .Values.prom2teams.templatepath }}
-  teams.j2: {{ .Files.Get "files/teams.j2" |  quote }}
\ No newline at end of file
+  teams.j2: {{ .Files.Get "files/teams.j2" |  quote }}
+  {{- end -}}