diff --git a/litellm/integrations/langfuse/langfuse_otel.py b/litellm/integrations/langfuse/langfuse_otel.py
index bc47070f40f..a2cd3b2221a 100644
--- a/litellm/integrations/langfuse/langfuse_otel.py
+++ b/litellm/integrations/langfuse/langfuse_otel.py
@@ -2,7 +2,6 @@ import base64
 import json
 import os
 from datetime import datetime
-from types import MappingProxyType
 from typing import TYPE_CHECKING, Any, Final, Optional
 
 from litellm._logging import verbose_logger
@@ -30,14 +29,12 @@ LANGFUSE_CLOUD_US_ENDPOINT: Final = "https://us.cloud.langfuse.com/api/public/ot
 LANGFUSE_INGESTION_VERSION_HEADER: Final = "x-langfuse-ingestion-version"
 LANGFUSE_INGESTION_VERSION: Final = "4"
 
-_TRACE_IDENTITY_FIELDS: Final = MappingProxyType(
-    {
-        "user_api_key_alias": "key_alias",
-        "user_api_key_user_id": "user_id",
-        "user_api_key_end_user_id": "end_user_id",
-        "user_api_key_team_id": "team_id",
-        "user_api_key_team_alias": "team_alias",
-    }
+_TRACE_IDENTITY_FIELDS: Final = (
+    "user_api_key_alias",
+    "user_api_key_user_id",
+    "user_api_key_end_user_id",
+    "user_api_key_team_id",
+    "user_api_key_team_alias",
 )
 
 
@@ -152,10 +149,10 @@ class LangfuseOtelLogger(OpenTelemetry):
         observation_metadata: Final = log_requester_metadata(redact_user_api_key_info(metadata=request_metadata))
         safe_set_attribute(span, LangfuseSpanAttributes.OBSERVATION_METADATA.value, safe_dumps(observation_metadata))
         trace_prefix: Final = LangfuseSpanAttributes.TRACE_METADATA.value
-        for source_key, target_key in _TRACE_IDENTITY_FIELDS.items():
-            value = observation_metadata.get(source_key)
+        for field in _TRACE_IDENTITY_FIELDS:
+            value = observation_metadata.get(field)
             if value is not None:
-                safe_set_attribute(span, f"{trace_prefix}.{target_key}", value)
+                safe_set_attribute(span, f"{trace_prefix}.{field}", value)
 
     @staticmethod
     def _set_observation_output(span: Span, response_obj):
diff --git a/tests/integration/observability/test_langfuse_otel_metadata.py b/tests/integration/observability/test_langfuse_otel_metadata.py
index 8f64f66508c..03b828b0c50 100644
--- a/tests/integration/observability/test_langfuse_otel_metadata.py
+++ b/tests/integration/observability/test_langfuse_otel_metadata.py
@@ -31,6 +31,8 @@ def _langfuse_rig(
     marker: str,
 ) -> Iterator[tuple[Gateway, Wire, Wire]]:
     def upstream(request: Request) -> Reply:
+        if request.method == "GET":
+            return Reply(body=b'{"data":[]}')
         assert request.target.endswith("/chat/completions"), request.target
         return Reply(
             body=json.dumps(
@@ -138,16 +140,16 @@ def test_langfuse_otel_emits_request_metadata_under_langfuse_observation_and_tra
         assert {
             attribute: attrs.get(attribute)
             for attribute in (
-                "langfuse.trace.metadata.key_alias",
-                "langfuse.trace.metadata.team_id",
-                "langfuse.trace.metadata.team_alias",
-                "langfuse.trace.metadata.end_user_id",
+                "langfuse.trace.metadata.user_api_key_alias",
+                "langfuse.trace.metadata.user_api_key_team_id",
+                "langfuse.trace.metadata.user_api_key_team_alias",
+                "langfuse.trace.metadata.user_api_key_end_user_id",
             )
         } == {
-            "langfuse.trace.metadata.key_alias": key_alias,
-            "langfuse.trace.metadata.team_id": team_id,
-            "langfuse.trace.metadata.team_alias": team_alias,
-            "langfuse.trace.metadata.end_user_id": end_user,
+            "langfuse.trace.metadata.user_api_key_alias": key_alias,
+            "langfuse.trace.metadata.user_api_key_team_id": team_id,
+            "langfuse.trace.metadata.user_api_key_team_alias": team_alias,
+            "langfuse.trace.metadata.user_api_key_end_user_id": end_user,
         }, attrs
 
 
diff --git a/tests/test_litellm/integrations/test_langfuse_otel.py b/tests/test_litellm/integrations/test_langfuse_otel.py
index 0eb2dbdbc87..9fed4ef0d69 100644
--- a/tests/test_litellm/integrations/test_langfuse_otel.py
+++ b/tests/test_litellm/integrations/test_langfuse_otel.py
@@ -512,11 +512,11 @@ class TestLangfuseOtelIntegration:
             assert {
                 key: value for key, value in actual.items() if key.startswith("langfuse.trace.metadata.")
             } == {
-                "langfuse.trace.metadata.key_alias": "prod-key",
-                "langfuse.trace.metadata.user_id": "user-1",
-                "langfuse.trace.metadata.end_user_id": "end-user-1",
-                "langfuse.trace.metadata.team_id": "team-1",
-                "langfuse.trace.metadata.team_alias": "team-a",
+                "langfuse.trace.metadata.user_api_key_alias": "prod-key",
+                "langfuse.trace.metadata.user_api_key_user_id": "user-1",
+                "langfuse.trace.metadata.user_api_key_end_user_id": "end-user-1",
+                "langfuse.trace.metadata.user_api_key_team_id": "team-1",
+                "langfuse.trace.metadata.user_api_key_team_alias": "team-a",
             }
 
     def test_request_metadata_redaction_matches_vanilla_langfuse(self, monkeypatch):