diff --git a/google/cloud/aiplatform/v1beta1/vertex_rag_data_service.proto b/google/cloud/aiplatform/v1beta1/vertex_rag_data_service.proto
index 914e9b5108..da2f9f6bfa 100644
--- a/google/cloud/aiplatform/v1beta1/vertex_rag_data_service.proto
+++ b/google/cloud/aiplatform/v1beta1/vertex_rag_data_service.proto
@@ -257,6 +257,10 @@ message DeleteRagCorpusRequest {
   // deleted. Otherwise, the request will only work if the RagCorpus has no
   // RagFiles.
   bool force = 2 [(google.api.field_behavior) = OPTIONAL];
+
+  // Optional. If set to true, any errors generated by external vector database
+  // during the deletion will be ignored. The default value is false.
+  bool force_delete = 3 [(google.api.field_behavior) = OPTIONAL];
 }
 
 // Request message for