diff --git a/src/Databases/DataLake/RestCatalog.cpp b/src/Databases/DataLake/RestCatalog.cpp
index 9750c3de6dbf..a77da1a751d3 100644
--- a/src/Databases/DataLake/RestCatalog.cpp
+++ b/src/Databases/DataLake/RestCatalog.cpp
@@ -1725,6 +1725,13 @@ void RestCatalog::createNamespaceIfNotExists(const String & namespace_name, cons
         auto timer = DB::CurrentThread::getProfileEvents().timer(ProfileEvents::DataLakeRestCatalogCreateNamespaceMicroseconds);
         sendRequest(endpoint, request_body);
     }
+    catch (const DB::HTTPException & e)
+    {
+        if (e.getHTTPStatus() == Poco::Net::HTTPResponse::HTTP_CONFLICT)
+            LOG_DEBUG(log, "Namespace {} already exists", namespace_name);
+        else
+            DB::tryLogCurrentException(log);
+    }
     catch (...)
     {
         DB::tryLogCurrentException(log);
diff --git a/src/IO/HTTPCommon.cpp b/src/IO/HTTPCommon.cpp
index 3bd91cb9950c..14d7fd8d4db0 100644
--- a/src/IO/HTTPCommon.cpp
+++ b/src/IO/HTTPCommon.cpp
@@ -70,7 +70,8 @@ bool isRetriableHTTPError(const Poco::Net::HTTPResponse::HTTPStatus http_status)
         Poco::Net::HTTPResponse::HTTPStatus::HTTP_NOT_FOUND,
         Poco::Net::HTTPResponse::HTTPStatus::HTTP_FORBIDDEN,
         Poco::Net::HTTPResponse::HTTPStatus::HTTP_NOT_IMPLEMENTED,
-        Poco::Net::HTTPResponse::HTTPStatus::HTTP_METHOD_NOT_ALLOWED};
+        Poco::Net::HTTPResponse::HTTPStatus::HTTP_METHOD_NOT_ALLOWED,
+        Poco::Net::HTTPResponse::HTTPStatus::HTTP_CONFLICT};
 
     return std::all_of(
         non_retriable_errors.begin(), non_retriable_errors.end(), [&](const auto status) { return http_status != status; });