invoke-ai/InvokeAI · error · ExternalProviderRequestError

DashScope async request failed with status

Error message

DashScope async request failed with status {response.status_code} for model '{model_id}': {response.text}

What it means

In the asynchronous DashScope path, task submission POST must return 2xx; otherwise _generate_async raises ExternalProviderRequestError with the status code and response body before any task_id exists. Same family as error 624 but for the async submit endpoint.

Solutions

1. Inspect status code and body in the message for DashScope's error code (e.g. AccessDenied, Throttling)
2. Fix authentication: set a valid external_alibabacloud_api_key
3. Correct request parameters/size/model id per the async API docs
4. Retry with backoff on 429/5xx; submission already uses _post_with_retry

if not api_key:
    raise ConfigError("DashScope key missing")  # avoid guaranteed 401 on async submit
if request.model.provider_model_id not in _ASYNC_MODELS:
    raise ValueError("model is not an async DashScope model")

def is_async_submit_error(e: Exception) -> bool:
    return isinstance(e, ExternalProviderRequestError) and 'DashScope async request failed' in str(e)

try:
    result = provider.generate(request)
except ExternalProviderRequestError as e:
    if 'async request failed with status 429' in str(e):
        wait_and_resubmit(request)
    else:
        log.error("DashScope async submit failed: %s", e)
        raise

When it happens

Trigger: _generate_async posts the task-creation payload (with async headers) to the DashScope async endpoint and receives a non-2xx response: bad key (401), invalid model or parameters (400), throttling (429), or server error (5xx).

Common situations: Using an async-only model with an invalid key; request payload violating the async API schema; exceeding QPS limits on DashScope; transient DashScope incidents.

Related errors

• DashScope request failed with status
• DashScope task poll failed with status
• DashScope async response missing task_id
• DashScope task failed
• DashScope task timed out after s

AI-assisted analysis of invoke-ai/InvokeAI@0b6a024f2f (2026-08-29). Data as JSON: /api/errors/1534e16e6f0c1981. Report an issue: GitHub.

Appendix: source

Thrown at invokeai/app/services/external_generation/providers/alibabacloud.py:156

            "prompt_extend": False,
            "watermark": False,
        }
        if request.seed is not None:
            parameters["seed"] = request.seed

        input_data: dict[str, object] = {"prompt": request.prompt}

        payload: dict[str, object] = {
            "model": model_id,
            "input": input_data,
            "parameters": parameters,
        }

        response = self._post_with_retry(
            endpoint, headers=async_headers, json=payload, timeout=60, label="DashScope async submit"
        )
        if not response.ok:
            raise ExternalProviderRequestError(
                f"DashScope async request failed with status {response.status_code} for model '{model_id}': {response.text}"
            )

        data = response.json()
        request_id = data.get("request_id")
        output = data.get("output", {})
        task_id = output.get("task_id")

        if not task_id:
            raise ExternalProviderRequestError(f"DashScope async response missing task_id: {data}")

        return self._poll_task(base_url, headers, task_id, request, request_id)

    def _poll_task(
        self,
        base_url: str,
        headers: dict[str, str],
        task_id: str,

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