diff --git a/src/main/helm/templates/_helpers.tpl b/src/main/helm/templates/_helpers.tpl
index 124b152430602370722dca7e465b8c2d10b80c34..e6d9c8ad3c0c651c342697ccc99a741a46791248 100644
--- a/src/main/helm/templates/_helpers.tpl
+++ b/src/main/helm/templates/_helpers.tpl
@@ -48,6 +48,17 @@ app.kubernetes.io/namespace: {{ include "app.namespace" . }}
 {{ printf "%s-%s-%s" (include "app.ozgcloudBundesland" .) ( include "app.ozgcloudBezeichner" . ) ( include "app.ozgcloudEnvironment" . ) | trunc 63 | trimSuffix "-" }}
 {{- end -}}
 
+{{- define "app.ozgcloudBundesland" -}}
+{{- required "Bundesland muss angegeben sein" (.Values.ozgcloud).bundesland }}
+{{- end -}}
+
+{{- define "app.ozgcloudBezeichner" -}}
+{{- required "ozgcloud.bezeichner muss angegeben sein" (.Values.ozgcloud).bezeichner -}}
+{{- if lt 27 (len (.Values.ozgcloud).bezeichner) -}}
+{{ fail (printf "ozgcloud.bezeichner %s ist zu lang (max. 27 Zeichen)" (.Values.ozgcloud).bezeichner) }}
+{{- end -}}
+{{- end -}}
+
 {{- define "app.ssoClientName" -}}
 {{- if (.Values.sso).client_name -}}
 {{ printf "%s" (.Values.sso).client_name }}