fix: Remove tags from TransformJob creation in Transformer

The TransformJob resource doesn't accept tags parameter during
initialization. Remove tags from the transformed dict before
passing to TransformJob constructor to prevent errors.

Author: Drew Keller

sagemaker-core/src/sagemaker/core/transformer.py

@@ -409,6 +409,8 @@ def submit(request):
         from sagemaker.core.utils.code_injection.codec import transform as transform_util
 
         transformed = transform_util(serialized_request, "CreateTransformJobRequest")
+        # Remove tags from transformed dict as TransformJob resource doesn't accept it
+        transformed.pop("tags", None)
         self.latest_transform_job = TransformJob(**transformed)
 
         if wait:

sagemaker-core/tests/unit/test_transformer.py

@@ -639,3 +639,22 @@ def test_load_config(self, mock_session):
         assert "resource_config" in config
         assert config["output_config"]["s3_output_path"] == "s3://bucket/output"
         assert config["resource_config"]["instance_count"] == 2
+
+    def test_transform_removes_tags_from_transform_job(self, mock_session):
+        """Test that tags are removed from transformed dict before TransformJob creation"""
+        transformer = Transformer(
+            model_name="test-model",
+            instance_count=1,
+            instance_type="ml.m5.xlarge",
+            sagemaker_session=mock_session,
+            tags=[{"Key": "test", "Value": "value"}],
+        )
+
+        with patch("sagemaker.core.transformer.TransformJob") as mock_job_class:
+            transformer.transform(
+                data="s3://bucket/input",
+                job_name="test-job",
+            )
+            mock_job_class.assert_called_once()
+            call_kwargs = mock_job_class.call_args[1]
+            assert "tags" not in call_kwargs