diff --git a/litellm/proxy/management_helpers/bulk_user_creation.py b/litellm/proxy/management_helpers/bulk_user_creation.py
index cca37ebd7ed..62228f6faa8 100644
--- a/litellm/proxy/management_helpers/bulk_user_creation.py
+++ b/litellm/proxy/management_helpers/bulk_user_creation.py
@@ -31,6 +31,7 @@ from litellm.proxy._types import (
 from litellm.proxy.auth.auth_checks import invalidate_team_member_spend_state
 from litellm.proxy.auth.auth_utils import enforce_batch_limits_are_admin_only
 from litellm.proxy.auth.litellm_license import LicenseCheck
+from litellm.proxy.common_utils.callback_config_validation import credential_reference_rejection
 from litellm.proxy.common_utils.timezone_utils import get_budget_reset_time
 from litellm.proxy.db.exception_handler import PrismaDBExceptionHandler
 from litellm.proxy.hooks.user_management_event_hooks import UserManagementEventHooks
@@ -221,7 +222,14 @@ def _row_error(item: BulkNewUserItem, user_api_key_dict: UserAPIKeyAuth) -> str
             enforce_batch_limits_are_admin_only(item, None, user_api_key_dict, "key")
     except Exception as exc:  # noqa: BLE001  # any validation failure is reported on this row only
         return _error_message(exc)
-    return None
+    rejection: Final = (
+        credential_reference_rejection(
+            item.metadata, None, is_proxy_admin=user_api_key_dict.user_role == LitellmUserRoles.PROXY_ADMIN
+        )
+        if item.auto_create_key
+        else None
+    )
+    return None if rejection is None else rejection.message
 
 
 def _normalized_email(email: str | None) -> str | None:
diff --git a/tests/integration/observability/test_arize_key_credential_reference.py b/tests/integration/observability/test_arize_key_credential_reference.py
index a445269837e..57e74b370e3 100644
--- a/tests/integration/observability/test_arize_key_credential_reference.py
+++ b/tests/integration/observability/test_arize_key_credential_reference.py
@@ -220,3 +220,20 @@ def test_only_proxy_admins_create_a_user_whose_key_references_a_credential(gatew
         )
         assert single.status_code == 403, single.text
         assert "litellm_credential_name" in single.text, single.text
+
+        delegate_key: Final = scenario.key(
+            user_id=scenario.user(user_role="internal_user"), allowed_routes=["/management/v1/users/bulk"]
+        )
+        bulk: Final = rig.proxy.request(
+            "POST",
+            "/management/v1/users/bulk",
+            {
+                "users": [
+                    {"user_id": "user-" + uuid.uuid4().hex, "auto_create_key": True, "metadata": referencing_metadata}
+                ]
+            },
+            key=delegate_key,
+        )
+        assert bulk.status_code == 200, bulk.text
+        assert [row["success"] for row in bulk.json()["data"]] == [False], bulk.text
+        assert "litellm_credential_name" in bulk.json()["data"][0]["error"], bulk.text
diff --git a/tests/unit/proxy/management_helpers/test_bulk_user_creation.py b/tests/unit/proxy/management_helpers/test_bulk_user_creation.py
index 2b966a8ebeb..96c84578111 100644
--- a/tests/unit/proxy/management_helpers/test_bulk_user_creation.py
+++ b/tests/unit/proxy/management_helpers/test_bulk_user_creation.py
@@ -7,6 +7,7 @@ import pytest
 from prisma.errors import UniqueViolationError
 from pydantic import BaseModel, ConfigDict, ValidationError
 
+import litellm
 from litellm.caching.caching import DualCache
 from litellm.proxy._types import LiteLLM_TeamTable, LitellmUserRoles, Member, UserAPIKeyAuth
 from litellm.proxy.list_api.common import ManagementProblem
@@ -15,6 +16,7 @@ from litellm.types.proxy.management_endpoints.internal_user_endpoints import (
     BulkNewUserItem,
     BulkNewUserRequest,
 )
+from litellm.types.utils import CredentialItem
 
 ADMIN: Final = UserAPIKeyAuth(user_id="admin", user_role=LitellmUserRoles.PROXY_ADMIN)
 INTERNAL: Final = UserAPIKeyAuth(user_id="someone", user_role=LitellmUserRoles.INTERNAL_USER)
@@ -434,6 +436,39 @@ async def test_only_proxy_admin_sets_batch_limits_on_a_created_key():
     assert calls[-1]["metadata"] == limits
 
 
+@pytest.mark.asyncio
+async def test_only_proxy_admin_creates_a_key_whose_logging_references_a_credential(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    monkeypatch.setattr(
+        litellm,
+        "credential_list",
+        [CredentialItem(credential_name="space-a", credential_values={"arize_api_key": "k"}, credential_info={})],
+    )
+    reference: Final = {"logging": [{"callback_name": "arize", "litellm_credential_name": "space-a", "callback_vars": {}}]}
+    calls: list[dict[str, object]] = []
+
+    async def generate_key(**kwargs: object) -> dict[str, object]:
+        calls.append(kwargs)
+        return {"token": f"sk-{kwargs['user_id']}"}
+
+    rows: Final = [
+        {"user_id": "u1", "auto_create_key": True, "metadata": reference},
+        {"user_id": "u2", "auto_create_key": True},
+    ]
+
+    response = await _run(_FakePrisma(), rows, caller=INTERNAL, generate_key=generate_key)
+
+    assert [r.success for r in response.data] == [False, True]
+    assert "litellm_credential_name" in (response.data[0].error or "")
+    assert [call["user_id"] for call in calls] == ["u2"]
+
+    admin_response = await _run(_FakePrisma(), rows[:1], caller=ADMIN, generate_key=generate_key)
+
+    assert [r.key for r in admin_response.data] == ["sk-u1"]
+    assert calls[-1]["metadata"] == reference
+
+
 @pytest.mark.asyncio
 async def test_license_is_checked_once_against_the_whole_batch():
     prisma = _FakePrisma()