1 files changed, 2 insertions, 2 deletions
diff --git a/google/ads/googleads/v2/resources/ad_group_criterion_simulation.proto b/google/ads/googleads/v2/resources/ad_group_criterion_simulation.proto
index b281918b8..f9c8cabfc 100644
--- a/google/ads/googleads/v2/resources/ad_group_criterion_simulation.proto
+++ b/google/ads/googleads/v2/resources/ad_group_criterion_simulation.proto
@@ -48,12 +48,12 @@ message AdGroupCriterionSimulation {
     pattern: "customers/{customer}/adGroupCriterionSimulations/{ad_group_criterion_simulation}"
   };
 
-  // Immutable. The resource name of the ad group criterion simulation.
+  // Output only. The resource name of the ad group criterion simulation.
   // Ad group criterion simulation resource names have the form:
   //
   // `customers/{customer_id}/adGroupCriterionSimulations/{ad_group_id}~{criterion_id}~{type}~{modification_method}~{start_date}~{end_date}`
   string resource_name = 1 [
-    (google.api.field_behavior) = IMMUTABLE,
+    (google.api.field_behavior) = OUTPUT_ONLY,
     (google.api.resource_reference) = {
       type: "googleads.googleapis.com/AdGroupCriterionSimulation"
     }