BerriAI/litellm · error · HTTPException

Policy with name '{request.policy_name}' already exists

Error message

Policy with name '{request.policy_name}' already exists

What it means

Uniqueness guard when creating a policy: the underlying add_policy_to_db failed with a 'unique constraint' error, i.e. a policy with the same policy_name already exists, so the request is rejected as a 400.

Source

Thrown at litellm/proxy/policy_engine/policy_endpoints.py:208

    ```
    """
    from litellm.proxy.proxy_server import prisma_client

    if prisma_client is None:
        raise HTTPException(status_code=500, detail="Database not connected")

    try:
        created_by: Final = user_api_key_dict.user_id
        result: Final = await get_policy_registry().add_policy_to_db(
            policy_request=request,
            prisma_client=prisma_client,
            created_by=created_by,
        )
        return result
    except Exception as e:
        verbose_proxy_logger.exception("Error creating policy: %s", e)
        if "unique constraint" in str(e).lower():
            raise HTTPException(
                status_code=400,
                detail=f"Policy with name '{request.policy_name}' already exists",
            )
        raise HTTPException(status_code=500, detail=str(e))


# ─────────────────────────────────────────────────────────────────────────────
# Policy Versioning Endpoints (must be before /policies/{policy_id} to avoid path conflicts)
# ─────────────────────────────────────────────────────────────────────────────


@router.get(
    "/policies/name/{policy_name}/versions",
    tags=["Policies"],
    dependencies=[Depends(user_api_key_auth)],
    response_model=PolicyVersionListResponse,
)
async def list_policy_versions(policy_name: str):

View on GitHub (pinned to 77b7c6c40c)

Solutions

1. Choose a different policy_name, or update the existing policy instead of creating a new one.
2. Delete the existing policy first if a fresh create is intended.

When it happens

Trigger: Thrown at litellm/proxy/policy_engine/policy_endpoints.py:208 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of BerriAI/litellm@77b7c6c40c (2026-08-18). Data as JSON: /api/errors/66becc9812b77326. Report an issue: GitHub.