diff --git a/sdk/textanalytics/azure-ai-textanalytics/azure/ai/textanalytics/_base_client.py b/sdk/textanalytics/azure-ai-textanalytics/azure/ai/textanalytics/_base_client.py
index ee6c6d3c0ffa..da878fc5928a 100644
--- a/sdk/textanalytics/azure-ai-textanalytics/azure/ai/textanalytics/_base_client.py
+++ b/sdk/textanalytics/azure-ai-textanalytics/azure/ai/textanalytics/_base_client.py
@@ -70,6 +70,7 @@ def __init__(
                 "$top",
                 "$skip",
                 "opinionMining",
+                "api-version"
             }
         )
         try:
diff --git a/sdk/textanalytics/azure-ai-textanalytics/azure/ai/textanalytics/_policies.py b/sdk/textanalytics/azure-ai-textanalytics/azure/ai/textanalytics/_policies.py
index 1d3ee9d1f0b7..04e1c1efa9a6 100644
--- a/sdk/textanalytics/azure-ai-textanalytics/azure/ai/textanalytics/_policies.py
+++ b/sdk/textanalytics/azure-ai-textanalytics/azure/ai/textanalytics/_policies.py
@@ -28,18 +28,18 @@ def on_response(self, request, response):
             data = ContentDecodePolicy.deserialize_from_http_generics(
                 response.http_response
             )
-            if self._is_lro and (not data or data.get("status") not in _FINISHED):
+            if self._is_lro and (not data or data.get("status", "").lower() not in _FINISHED):
+                return
+            if response.http_response.status_code == 429:
                 return
             if data:
                 inner = data.get("results", data)  # language API compat
                 statistics = inner.get("statistics", None)
                 model_version = inner.get("modelVersion", None)
-
-                if statistics or model_version:
-                    batch_statistics = TextDocumentBatchStatistics._from_generated(  # pylint: disable=protected-access
-                        statistics
-                    )
-                    response.statistics = batch_statistics
-                    response.model_version = model_version
+                batch_statistics = TextDocumentBatchStatistics._from_generated(  # pylint: disable=protected-access
+                    statistics
+                )
+                response.statistics = batch_statistics
+                response.model_version = model_version
             response.raw_response = data
             self._response_callback(response)
diff --git a/sdk/textanalytics/azure-ai-textanalytics/azure/ai/textanalytics/aio/_base_client_async.py b/sdk/textanalytics/azure-ai-textanalytics/azure/ai/textanalytics/aio/_base_client_async.py
index 9fb4ea73df88..de1d78136bda 100644
--- a/sdk/textanalytics/azure-ai-textanalytics/azure/ai/textanalytics/aio/_base_client_async.py
+++ b/sdk/textanalytics/azure-ai-textanalytics/azure/ai/textanalytics/aio/_base_client_async.py
@@ -57,6 +57,7 @@ def __init__(
                 "$top",
                 "$skip",
                 "opinionMining",
+                "api-version"
             }
         )
         try: