diff --git a/src/main/proto/wfa/measurement/reporting/v2alpha/basic_reports_service.proto b/src/main/proto/wfa/measurement/reporting/v2alpha/basic_reports_service.proto
index 95d28128cd9..c2a8cffa461 100644
--- a/src/main/proto/wfa/measurement/reporting/v2alpha/basic_reports_service.proto
+++ b/src/main/proto/wfa/measurement/reporting/v2alpha/basic_reports_service.proto
@@ -149,8 +149,7 @@ message CreateBasicReportRequest {
   // The BasicReport to create.
   BasicReport basic_report = 3 [(google.api.field_behavior) = REQUIRED];
 
-  // A unique identifier for this request. Restricted to 36 ASCII characters.
-  // A random UUID is recommended.
+  // A unique identifier for this request.
   // This request is only idempotent if a `request_id` is provided.
   string request_id = 4 [
     (google.api.field_info).format = UUID4,