diff --git a/synapseclient/client.py b/synapseclient/client.py
index 0c0e30a30..4d612c7f6 100644
--- a/synapseclient/client.py
+++ b/synapseclient/client.py
@@ -1633,10 +1633,10 @@ def delete(self, obj, version=None):
                             delete.
 
         """
-        entity_id = id_of(obj)
-        trace.get_current_span().set_attributes({"synapse.id": entity_id})
         # Handle all strings as the Entity ID for backward compatibility
         if isinstance(obj, str):
+            entity_id = id_of(obj)
+            trace.get_current_span().set_attributes({"synapse.id": entity_id})
             if version:
                 self.restDELETE(uri=f"/entity/{entity_id}/version/{version}")
             else:
diff --git a/synapseclient/core/upload/multipart_upload.py b/synapseclient/core/upload/multipart_upload.py
index 778c23d65..717b6c2f6 100644
--- a/synapseclient/core/upload/multipart_upload.py
+++ b/synapseclient/core/upload/multipart_upload.py
@@ -15,6 +15,7 @@
 import mimetypes
 import os
 import re
+import typing
 import requests
 import threading
 import time
@@ -212,8 +213,9 @@ def _refresh_pre_signed_part_urls(
 
             return refreshed_url
 
-    def _handle_part(self, part_number, otel_context: Context):
-        context.attach(otel_context)
+    def _handle_part(self, part_number, otel_context: typing.Union[Context, None]):
+        if otel_context:
+            context.attach(otel_context)
         with tracer.start_as_current_span("UploadAttempt::_handle_part"):
             with self._lock:
                 if self._aborted:
diff --git a/tests/unit/synapseclient/core/upload/unit_test_multipart_upload.py b/tests/unit/synapseclient/core/upload/unit_test_multipart_upload.py
index 9ea7ee4af..74fea01ec 100644
--- a/tests/unit/synapseclient/core/upload/unit_test_multipart_upload.py
+++ b/tests/unit/synapseclient/core/upload/unit_test_multipart_upload.py
@@ -222,7 +222,7 @@ def test_handle_part_aborted(self, syn):
         upload._aborted = True
 
         with pytest.raises(SynapseUploadAbortedException):
-            upload._handle_part(5)
+            upload._handle_part(5, None)
 
     def test_handle_part__500(self, syn):
         """Test that we retry if we encounter a 500 from AWS on a PUT to the signed URL"""
@@ -323,7 +323,7 @@ def _handle_part_success_test(
 
             mock_session.put.side_effect = [aws_call[1] for aws_call in aws_calls]
 
-            result = upload._handle_part(1)
+            result = upload._handle_part(1, None)
 
             expected_put_calls = [aws_call[0] for aws_call in aws_calls]
             assert mock_session.put.call_args_list == expected_put_calls
@@ -465,7 +465,7 @@ def test_handle_part__url_expired_twice(self, syn):
             mock_session.put.return_value = mock_response
 
             with pytest.raises(SynapseHTTPError):
-                upload._handle_part(1)
+                upload._handle_part(1, None)
 
     def test_call_upload(self, syn):
         """Verify the behavior of an upload call, it should trigger