diff --git a/sagemaker-core/src/sagemaker/core/clarify/__init__.py b/sagemaker-core/src/sagemaker/core/clarify/__init__.py
index 84d2cb3a8d..0f26c3aea6 100644
--- a/sagemaker-core/src/sagemaker/core/clarify/__init__.py
+++ b/sagemaker-core/src/sagemaker/core/clarify/__init__.py
@@ -379,12 +379,13 @@
                     "image/jpeg",
                     "image/png",
                     "application/x-npy",
+                    "application/x-parquet",
                 ),
             ),
             SchemaOptional("accept_type"): And(
                 str,
                 Use(str.lower),
-                lambda s: s in ("text/csv", "application/jsonlines", "application/json"),
+                lambda s: s in ("text/csv", "application/jsonlines", "application/json", "application/x-parquet"),
             ),
             SchemaOptional("label"): Or(str, int),
             SchemaOptional("probability"): Or(str, int),
@@ -1020,11 +1021,13 @@ def __init__(
                 Must be set with ``instance_count``, ``model_name``
             accept_type (str): The model output format to be used for getting inferences with the
                 shadow endpoint. Valid values are ``"text/csv"`` for CSV,
-                ``"application/jsonlines"`` for JSON Lines, and ``"application/json"`` for JSON.
+                ``"application/jsonlines"`` for JSON Lines, ``"application/json"`` for JSON, and
+                ``"application/x-parquet"`` for Parquet.
                 Default is the same as ``content_type``.
             content_type (str): The model input format to be used for getting inferences with the
                 shadow endpoint. Valid values are ``"text/csv"`` for CSV,
-                ``"application/jsonlines"`` for JSON Lines, and ``"application/json"`` for JSON.
+                ``"application/jsonlines"`` for JSON Lines, ``"application/json"`` for JSON, and
+                ``"application/x-parquet"`` for Parquet.
                 Default is the same as ``dataset_format``.
             content_template (str): A template string to be used to construct the model input from
                 dataset instances. It is only used, and required, when ``model_content_type`` is
@@ -1160,10 +1163,10 @@ def __init__(
                 )
             self.predictor_config["endpoint_name_prefix"] = endpoint_name_prefix
         if accept_type is not None:
-            if accept_type not in ["text/csv", "application/jsonlines", "application/json"]:
+            if accept_type not in ["text/csv", "application/jsonlines", "application/json", "application/x-parquet"]:
                 raise ValueError(
                     f"Invalid accept_type {accept_type}."
-                    f" Please choose text/csv or application/jsonlines."
+                    f" Please choose text/csv, application/jsonlines, application/json, or application/x-parquet."
                 )
             if time_series_model_config and accept_type == "text/csv":
                 raise ValueError(
@@ -1179,10 +1182,11 @@ def __init__(
                 "image/jpg",
                 "image/png",
                 "application/x-npy",
+                "application/x-parquet",
             ]:
                 raise ValueError(
                     f"Invalid content_type {content_type}."
-                    f" Please choose text/csv or application/jsonlines."
+                    f" Please choose a valid content_type."
                 )
             if content_type == "application/jsonlines":
                 if content_template is None:
diff --git a/sagemaker-core/src/sagemaker/core/transformer.py b/sagemaker-core/src/sagemaker/core/transformer.py
index 93a35dc075..1918df9d95 100644
--- a/sagemaker-core/src/sagemaker/core/transformer.py
+++ b/sagemaker-core/src/sagemaker/core/transformer.py
@@ -409,6 +409,9 @@ def submit(request):
         from sagemaker.core.utils.code_injection.codec import transform as transform_util
 
         transformed = transform_util(serialized_request, "CreateTransformJobRequest")
+        # TransformJob does not accept 'tags'/'Tags', so we must pop them to avoid pydantic ValidationError
+        transformed.pop("tags", None)
+        transformed.pop("Tags", None)
         self.latest_transform_job = TransformJob(**transformed)
 
         if wait:
@@ -714,7 +717,16 @@ def _get_transform_request(
             transform_request["Environment"] = env
 
         if tags is not None:
-            transform_request["Tags"] = tags
+            from sagemaker.core.common_utils import format_tags
+            formatted_tags = format_tags(tags)
+            
+            if isinstance(formatted_tags, list):
+                formatted_tags = [
+                    {"Key": t.get("Key", t.get("key", "")), "Value": t.get("Value", t.get("value", ""))}
+                    if isinstance(t, dict) else t
+                    for t in formatted_tags
+                ]
+            transform_request["Tags"] = formatted_tags
 
         if data_processing is not None:
             transform_request["DataProcessing"] = data_processing