Use errors method of ServiceResponse

app/graphql/mutations/alert_management/update_alert_status.rb

@@ -27,7 +27,7 @@ module Mutations
       def prepare_response(result)
         {
           alert: result.payload[:alert],
-          errors: result.error? ? [result.message] : []
+          errors: result.errors
         }
       end
     end

app/graphql/mutations/container_expiration_policies/update.rb

@@ -48,7 +48,7 @@ module Mutations
 
         {
           container_expiration_policy: result.payload[:container_expiration_policy],
-          errors: result.error? ? [result.message] : []
+          errors: result.errors
         }
       end