diff --git a/litellm/proxy/openai_files_endpoints/common_utils.py b/litellm/proxy/openai_files_endpoints/common_utils.py
index ac82b3dbada..cdea83554d6 100644
--- a/litellm/proxy/openai_files_endpoints/common_utils.py
+++ b/litellm/proxy/openai_files_endpoints/common_utils.py
@@ -559,20 +559,28 @@ def get_team_provider_credentials(
             return {key: value for key, value in credentials.items() if key != "model"}
         return None
 
-    # 1. Prefer the team's own BYOK deployment, matched by model_info.team_id.
+    def _usable_team_deployment_id(deployment: dict) -> str | None:
+        model_info: Final = deployment.get("model_info") or {}
+        if model_info.get("team_id") != team_id:
+            return None
+        if not _key_may_use(model_info.get("team_public_model_name") or deployment.get("model_name")):
+            return None
+        return model_info.get("id")
+
+    # 1. Prefer the team's own BYOK deployment, matched by model_info.team_id. The lowest
+    #    deployment id wins so every worker picks the same one in any load or edit order.
     if team_id is not None:
-        for deployment in llm_router.model_list or []:
-            model_info = deployment.get("model_info") or {}
-            if model_info.get("team_id") != team_id:
-                continue
-            deployment_id = model_info.get("id")
-            if deployment_id is None:
-                continue
-            if not _key_may_use(model_info.get("team_public_model_name") or deployment.get("model_name")):
-                continue
-            credentials = _provider_credentials(deployment_id)
-            if credentials is not None:
-                return credentials
+        team_deployment_ids: Final = sorted(
+            deployment_id
+            for deployment in llm_router.model_list or []
+            if (deployment_id := _usable_team_deployment_id(deployment)) is not None
+        )
+        team_credentials: Final = next(
+            (credentials for credentials in map(_provider_credentials, team_deployment_ids) if credentials is not None),
+            None,
+        )
+        if team_credentials is not None:
+            return team_credentials
 
     if not include_accessible_deployments:
         return None
diff --git a/litellm/proxy/proxy_server.py b/litellm/proxy/proxy_server.py
index 3eb11738af6..bdaa4af4e26 100644
--- a/litellm/proxy/proxy_server.py
+++ b/litellm/proxy/proxy_server.py
@@ -8307,7 +8307,7 @@ class ProxyConfig:
         try:
             new_models: Final[Sequence[_ProxyModelRow]] = await ModelRepository(
                 WriterPinnedClient(prisma_client.db)
-            ).table.find_many(order=[{"created_at": "asc"}, {"model_id": "asc"}])
+            ).table.find_many()
             self.auto_router_db_catalog = build_auto_router_catalog(new_models)
             return new_models
         except Exception as e:
diff --git a/litellm/proxy/rag_endpoints/endpoints.py b/litellm/proxy/rag_endpoints/endpoints.py
index 92ddb423086..b607cc3fa7f 100644
--- a/litellm/proxy/rag_endpoints/endpoints.py
+++ b/litellm/proxy/rag_endpoints/endpoints.py
@@ -690,7 +690,7 @@ async def rag_ingest(
         if response.get("status") == "failed":
             raise HTTPException(
                 status_code=response.get("error_status_code") or 500,
-                detail={"error": response.get("error")},
+                detail={"id": response.get("id"), "status": "failed", "error": response.get("error")},
             )
 
         # Save vector store to database if it was newly created and prisma_client is available
diff --git a/litellm/rag/ingestion/base_ingestion.py b/litellm/rag/ingestion/base_ingestion.py
index 0d9ba2f3ddb..75eb6eab887 100644
--- a/litellm/rag/ingestion/base_ingestion.py
+++ b/litellm/rag/ingestion/base_ingestion.py
@@ -34,6 +34,10 @@ if TYPE_CHECKING:
     from litellm import Router
 
 
+class RAGIngestBadRequestError(ValueError):
+    status_code: Final = 400
+
+
 class BaseRAGIngestion(ABC):
     """
     Base class for RAG ingestion.
diff --git a/litellm/rag/ingestion/openai_ingestion.py b/litellm/rag/ingestion/openai_ingestion.py
index 6c7c619237d..e6a3f0bb74f 100644
--- a/litellm/rag/ingestion/openai_ingestion.py
+++ b/litellm/rag/ingestion/openai_ingestion.py
@@ -10,7 +10,7 @@ from __future__ import annotations
 from typing import TYPE_CHECKING, Final
 
 import litellm
-from litellm.rag.ingestion.base_ingestion import BaseRAGIngestion
+from litellm.rag.ingestion.base_ingestion import BaseRAGIngestion, RAGIngestBadRequestError
 from litellm.vector_store_files.main import acreate as vector_store_file_acreate
 from litellm.vector_stores.main import acreate as vector_store_acreate
 
@@ -87,7 +87,7 @@ class OpenAIRAGIngestion(BaseRAGIngestion):
         api_base: Final = self.vector_store_config.get("api_base")
 
         if existing_file_id and not vector_store_id:
-            raise ValueError("vector_store_id is required when ingesting an existing file_id")
+            raise RAGIngestBadRequestError("vector_store_id is required when ingesting an existing file_id")
 
         # Create vector store if not provided
         if not vector_store_id:
diff --git a/litellm/rag/ingestion/vertex_ai_ingestion.py b/litellm/rag/ingestion/vertex_ai_ingestion.py
index eff8ad1b8cb..cceddf31117 100644
--- a/litellm/rag/ingestion/vertex_ai_ingestion.py
+++ b/litellm/rag/ingestion/vertex_ai_ingestion.py
@@ -22,7 +22,7 @@ from litellm.llms.custom_httpx.http_handler import (
 )
 from litellm.llms.vertex_ai.common_utils import get_vertex_base_url
 from litellm.llms.vertex_ai.vertex_llm_base import VertexBase
-from litellm.rag.ingestion.base_ingestion import BaseRAGIngestion
+from litellm.rag.ingestion.base_ingestion import BaseRAGIngestion, RAGIngestBadRequestError
 
 if TYPE_CHECKING:
     from litellm import Router
@@ -134,7 +134,9 @@ class VertexAIRAGIngestion(BaseRAGIngestion, VertexBase):
             Tuple of (rag_corpus_id, file_id)
         """
         if not self.project_id:
-            raise ValueError("vertex_project is required for Vertex AI RAG ingestion. Set it in vector_store config.")
+            raise RAGIngestBadRequestError(
+                "vertex_project is required for Vertex AI RAG ingestion. Set it in vector_store config."
+            )
 
         # Get or create RAG corpus
         rag_corpus_id = self.vector_store_config.get("vector_store_id")
diff --git a/tests/integration/authorization/test_rag_team_provider_credentials.py b/tests/integration/authorization/test_rag_team_provider_credentials.py
index 8ee38fe6060..92a6805f5e9 100644
--- a/tests/integration/authorization/test_rag_team_provider_credentials.py
+++ b/tests/integration/authorization/test_rag_team_provider_credentials.py
@@ -1275,35 +1275,64 @@ async def test_worker_sigkill_mid_query_burst_leaves_the_sibling_on_team_credent
             assert sum(1 for call in calls if call.route == "/v1/chat/completions") == held_by[survivor_pid] + 1, calls
 
 
-def test_a_team_with_two_openai_deployments_ingests_through_the_older_one_after_it_is_edited(tmp_path: Path) -> None:
+def _ingest_and_drain(
+    gateway: Gateway, scenario: Scenario, key: str, upstream: Wire
+) -> tuple[str, tuple[Signature, ...]]:
+    upstream.drain()
+    response: Final = _ingest(gateway, key)
+    assert response.status_code == 200, response.text
+    store_id: Final = string_value(object_value(response.json())["vector_store_id"])
+    scenario.cleanups.callback(gateway.post, "/vector_store/delete", {"vector_store_id": store_id})
+    calls: Final = tuple(_call(request) for request in upstream.drain())
+    return store_id, tuple(call.signature for call in calls if call.route != "/v1/models")
+
+
+def _ingests_after_editing(
+    gateway: Gateway, scenario: Scenario, key: str, upstream: Wire, model_id: str
+) -> tuple[tuple[str, tuple[Signature, ...]], ...]:
+    edited: Final = gateway.request("PATCH", f"/model/{model_id}/update", {"litellm_params": {"timeout": 30}})
+    assert edited.status_code == 200, edited.text
+    return tuple(_ingest_and_drain(gateway, scenario, key, upstream) for _ in range(4))
+
+
+def test_a_team_with_two_openai_deployments_ingests_through_the_same_one_after_either_is_edited(
+    tmp_path: Path,
+) -> None:
     with (
         gateway_from_environment() as admin_gateway,
         admin_gateway.scenario() as scenario,
         wire_server(_responder(threading.Event())) as upstream,
     ):
-        older_model: Final = f"integration-rag-older-{uuid.uuid4().hex}"
-        newer_model: Final = f"integration-rag-newer-{uuid.uuid4().hex}"
-        team_id: Final = scenario.team(models=[older_model, newer_model])
-        older_id: Final = _deployment(
-            admin_gateway,
-            scenario,
-            name=older_model,
-            model="openai/gpt-4o-mini",
-            api_key=TEAM_API_KEY,
-            api_base=f"{upstream.url}/team/v1",
-            team_id=team_id,
+        team_model: Final = f"integration-rag-team-{uuid.uuid4().hex}"
+        wildcard_model: Final = f"integration-rag-wildcard-{uuid.uuid4().hex}"
+        team_id: Final = scenario.team(models=[team_model, wildcard_model])
+        team_deployment: Final = (
+            _deployment(
+                admin_gateway,
+                scenario,
+                name=team_model,
+                model="openai/gpt-4o-mini",
+                api_key=TEAM_API_KEY,
+                api_base=f"{upstream.url}/team/v1",
+                team_id=team_id,
+            ),
+            "team",
+            TEAM_API_KEY,
         )
-        _deployment(
-            admin_gateway,
-            scenario,
-            name=newer_model,
-            model="openai/gpt-4o-mini",
-            api_key=WILDCARD_API_KEY,
-            api_base=f"{upstream.url}/wildcard/v1",
-            team_id=team_id,
+        wildcard_deployment: Final = (
+            _deployment(
+                admin_gateway,
+                scenario,
+                name=wildcard_model,
+                model="openai/gpt-4o-mini",
+                api_key=WILDCARD_API_KEY,
+                api_base=f"{upstream.url}/wildcard/v1",
+                team_id=team_id,
+            ),
+            "wildcard",
+            WILDCARD_API_KEY,
         )
-        edited: Final = admin_gateway.request("PATCH", f"/model/{older_id}/update", {"litellm_params": {"timeout": 30}})
-        assert edited.status_code == 200, edited.text
+        (picked_id, picked_prefix, picked_key), (other_id, _, _) = sorted((team_deployment, wildcard_deployment))
         key: Final = scenario.key(team_id=team_id)
         with (
             owned_proxy(
@@ -1315,12 +1344,12 @@ def test_a_team_with_two_openai_deployments_ingests_through_the_older_one_after_
             ) as gateway,
             gateway.scenario() as owned_scenario,
         ):
-            upstream.drain()
-            response: Final = _ingest(gateway, key)
-            assert response.status_code == 200, response.text
-            store_id: Final = string_value(object_value(response.json())["vector_store_id"])
-            owned_scenario.cleanups.callback(gateway.post, "/vector_store/delete", {"vector_store_id": store_id})
-
-            assert tuple(_call(request).signature for request in upstream.drain()) == _ingest_signatures(
-                "team", TEAM_API_KEY, store_id
+            ingests: Final = (
+                _ingest_and_drain(gateway, owned_scenario, key, upstream),
+                *_ingests_after_editing(gateway, owned_scenario, key, upstream, picked_id),
+                *_ingests_after_editing(gateway, owned_scenario, key, upstream, other_id),
             )
+
+            assert [calls for _, calls in ingests] == [
+                _ingest_signatures(picked_prefix, picked_key, store_id) for store_id, _ in ingests
+            ]
diff --git a/tests/unit/proxy/openai_files_endpoint/test_files_common_utils.py b/tests/unit/proxy/openai_files_endpoint/test_files_common_utils.py
index 5c1c371fd32..9e2fb6f1eaf 100644
--- a/tests/unit/proxy/openai_files_endpoint/test_files_common_utils.py
+++ b/tests/unit/proxy/openai_files_endpoint/test_files_common_utils.py
@@ -464,9 +464,7 @@ from litellm.proxy.openai_files_endpoints.common_utils import (
 )
 
 
-def _completed_batch_for_retire(
-    output_file_id: str | None, counts: BatchRequestCounts | None = None
-) -> LiteLLMBatch:
+def _completed_batch_for_retire(output_file_id: str | None, counts: BatchRequestCounts | None = None) -> LiteLLMBatch:
     kwargs = dict(
         id="batch-1",
         completion_window="24h",
@@ -714,3 +712,30 @@ def test_a_restricted_key_resolves_the_team_deployment_its_wildcard_or_model_cov
 @pytest.mark.parametrize("key_models", [["claude-opus-4-6"], ["anthropic/*"]])
 def test_a_restricted_key_outside_the_team_wildcard_never_resolves_its_credentials(key_models: list[str]):
     assert _team_only_openai_credentials("openai/*", "openai/*", key_models) is None
+
+
+def _team_openai_deployment(deployment_id: str, api_key: str) -> dict:
+    return {
+        "model_name": f"team-gpt-{deployment_id}",
+        "litellm_params": {"model": "openai/gpt-4o", "api_key": api_key},
+        "model_info": {"id": deployment_id, "team_id": "team-a"},
+    }
+
+
+@pytest.mark.parametrize("deployment_ids", [("deployment-a", "deployment-b"), ("deployment-b", "deployment-a")])
+def test_a_team_with_two_openai_deployments_resolves_the_same_one_in_any_router_order(
+    deployment_ids: tuple[str, str],
+):
+    router: Final = Router(
+        model_list=[_team_openai_deployment(deployment_id, f"{deployment_id}-key") for deployment_id in deployment_ids]
+    )
+
+    credentials: Final = get_team_provider_credentials(
+        llm_router=router,
+        user_api_key_dict=UserAPIKeyAuth(api_key="test-key", user_id="test-user", team_id="team-a"),
+        custom_llm_provider="openai",
+        include_accessible_deployments=False,
+    )
+
+    assert credentials is not None
+    assert credentials["api_key"] == "deployment-a-key"
diff --git a/tests/unit/proxy/rag_endpoints/test_rag_endpoints.py b/tests/unit/proxy/rag_endpoints/test_rag_endpoints.py
index 6f894dab878..6a4525560f9 100644
--- a/tests/unit/proxy/rag_endpoints/test_rag_endpoints.py
+++ b/tests/unit/proxy/rag_endpoints/test_rag_endpoints.py
@@ -556,6 +556,7 @@ def test_rag_ingest_failed_upstream_status_is_returned_without_persisting_store(
             "litellm.proxy.rag_endpoints.endpoints.litellm.aingest",
             new=AsyncMock(
                 return_value={
+                    "id": "ingest_abc",
                     "status": "failed",
                     "error": "unauthorized",
                     "error_status_code": 401,
@@ -571,7 +572,7 @@ def test_rag_ingest_failed_upstream_status_is_returned_without_persisting_store(
         )
 
     assert response.status_code == 401, response.json()
-    assert response.json() == {"detail": {"error": "unauthorized"}}
+    assert response.json() == {"detail": {"id": "ingest_abc", "status": "failed", "error": "unauthorized"}}
     managed_vector_store_table.create.assert_not_called()
 
 
diff --git a/tests/unit/rag/ingestion/test_base_ingestion.py b/tests/unit/rag/ingestion/test_base_ingestion.py
index 50b1823767f..8bf54085f6f 100644
--- a/tests/unit/rag/ingestion/test_base_ingestion.py
+++ b/tests/unit/rag/ingestion/test_base_ingestion.py
@@ -8,6 +8,8 @@ import respx
 import litellm
 from litellm.rag.ingestion.base_ingestion import BaseRAGIngestion
 from litellm.rag.ingestion.gemini_ingestion import GeminiRAGIngestion
+from litellm.rag.ingestion.openai_ingestion import OpenAIRAGIngestion
+from litellm.rag.ingestion.vertex_ai_ingestion import VertexAIRAGIngestion
 from litellm.types.utils import CredentialItem
 
 _FILE_URL: Final = "https://files.example/docs/report.pdf"
@@ -148,3 +150,24 @@ async def test_an_existing_file_id_on_a_store_that_cannot_take_one_fails_as_a_ba
     assert response["status"] == "failed"
     assert response["error_status_code"] == 400
     assert "does not support ingesting an existing file_id" in str(response["error"])
+
+
+@pytest.mark.parametrize(
+    ("ingestion_class", "ingest_kwargs"),
+    [
+        (OpenAIRAGIngestion, {"file_id": "file-abc"}),
+        (VertexAIRAGIngestion, {"file_data": ("report.txt", b"plain text", "text/plain")}),
+    ],
+)
+async def test_a_vector_store_config_missing_a_caller_field_fails_as_a_bad_request(
+    ingestion_class: type[BaseRAGIngestion],
+    ingest_kwargs: dict[str, object],
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    monkeypatch.delenv("VERTEXAI_PROJECT", raising=False)
+    ingestion: Final = ingestion_class(ingest_options={"vector_store": {"api_key": "caller-key"}})
+
+    response: Final = await ingestion.ingest(**ingest_kwargs)
+
+    assert response["status"] == "failed"
+    assert response["error_status_code"] == 400
diff --git a/ui/litellm-dashboard/src/app/(dashboard)/vector-stores/_components/CreateVectorStore.test.tsx b/ui/litellm-dashboard/src/app/(dashboard)/vector-stores/_components/CreateVectorStore.test.tsx
index ff0706b24cb..9ee41af6b84 100644
--- a/ui/litellm-dashboard/src/app/(dashboard)/vector-stores/_components/CreateVectorStore.test.tsx
+++ b/ui/litellm-dashboard/src/app/(dashboard)/vector-stores/_components/CreateVectorStore.test.tsx
@@ -3,6 +3,7 @@ import userEvent from "@testing-library/user-event";
 import { describe, it, expect, vi, beforeEach } from "vitest";
 import CreateVectorStore from "./CreateVectorStore";
 import * as networking from "@/components/networking";
+import { toast } from "@/lib/toast";
 
 // Mock the networking module
 vi.mock("@/components/networking", () => ({
@@ -215,6 +216,43 @@ describe("CreateVectorStore", () => {
     });
   });
 
+  it("should report the created store and the failed file when a later file fails to ingest", async () => {
+    vi.mocked(networking.ragIngestCall)
+      .mockResolvedValueOnce({ id: "ingest-1", status: "completed", vector_store_id: "vs_123", file_id: "file_1" })
+      .mockRejectedValueOnce(new Error("upstream rejected the file"));
+    const onSuccess = vi.fn();
+    render(<CreateVectorStore accessToken="test-token" onSuccess={onSuccess} />);
+
+    const uploadInput = document.querySelector('input[type="file"]') as HTMLInputElement;
+    await act(async () => {
+      fireEvent.change(uploadInput, {
+        target: {
+          files: [
+            new File(["first"], "first.txt", { type: "text/plain" }),
+            new File(["second"], "second.txt", { type: "text/plain" }),
+          ],
+        },
+      });
+    });
+    await waitFor(() => {
+      expect(screen.getByText("Uploaded Documents (2)")).toBeInTheDocument();
+    });
+
+    await act(async () => {
+      fireEvent.click(screen.getByRole("button", { name: /Create Vector Store/i }));
+    });
+
+    await waitFor(() => {
+      expect(toast.warning).toHaveBeenCalledWith(
+        "Vector store vs_123 was created with 1 document(s), but second.txt failed to ingest",
+        { description: "upstream rejected the file" },
+      );
+    });
+    expect(toast.fromError).not.toHaveBeenCalled();
+    expect(onSuccess).toHaveBeenCalledWith("vs_123");
+    expect(screen.getByText("Vector Store Created Successfully")).toBeInTheDocument();
+  });
+
   it("should exclude valkey from the provider dropdown since it has no RAG ingestion", async () => {
     render(<CreateVectorStore accessToken="test-token" />);
 
diff --git a/ui/litellm-dashboard/src/app/(dashboard)/vector-stores/_components/CreateVectorStore.tsx b/ui/litellm-dashboard/src/app/(dashboard)/vector-stores/_components/CreateVectorStore.tsx
index 8f24e47340c..2422e83355d 100644
--- a/ui/litellm-dashboard/src/app/(dashboard)/vector-stores/_components/CreateVectorStore.tsx
+++ b/ui/litellm-dashboard/src/app/(dashboard)/vector-stores/_components/CreateVectorStore.tsx
@@ -175,6 +175,7 @@ const CreateVectorStore: React.FC<CreateVectorStoreProps> = ({ accessToken, onSu
     setIsCreating(true);
     const results: RAGIngestResponse[] = [];
     let vectorStoreId: string | undefined;
+    let failure: { name: string; error: unknown } | undefined;
 
     try {
       // Ingest each document
@@ -208,19 +209,35 @@ const CreateVectorStore: React.FC<CreateVectorStoreProps> = ({ accessToken, onSu
           console.error(`Error ingesting ${doc.name}:`, error);
           // Update document status to error
           setDocuments((prev) => prev.map((d) => (d.uid === doc.uid ? { ...d, status: "error" as const } : d)));
-          throw error; // Stop processing on first error
+          failure = { name: doc.name, error };
+          break;
         }
       }
 
+      if (failure && !vectorStoreId) {
+        throw failure.error;
+      }
+
       setIngestResults(results);
-      toast.success(
-        `Successfully created vector store with ${results.length} document(s). Vector Store ID: ${vectorStoreId}`,
-      );
+      if (failure) {
+        toast.warning(
+          `Vector store ${vectorStoreId} was created with ${results.length} document(s), but ${failure.name} failed to ingest`,
+          { description: failure.error instanceof Error ? failure.error.message : String(failure.error) },
+        );
+      } else {
+        toast.success(
+          `Successfully created vector store with ${results.length} document(s). Vector Store ID: ${vectorStoreId}`,
+        );
+      }
 
       if (onSuccess && vectorStoreId) {
         onSuccess(vectorStoreId);
       }
 
+      if (failure) {
+        return;
+      }
+
       // Clear documents after successful creation
       setTimeout(() => {
         setDocuments([]);