> ## Documentation Index > Fetch the complete documentation index at: https://docs.xpander.ai/llms.txt > Use this file to discover all available pages before exploring further. # Errors and what to do > The messages the LLM Gateway answers with when it does not send a call, what each one means, and how to fix it. This page lists the messages the LLM Gateway returns when it refuses a call, and how to fix each one. When the gateway does not send a call to a provider, it answers in the caller's own format (Anthropic, OpenAI or Gemini), so your coding tool or app shows the message as an error. The call costs nothing, and it appears in [Logs](https://platform.xpander.ai/governance/logs) with the reason in **Status** and in its **Gateway decisions**. In Xpander Chat, a run refused this way ends with a card titled *xpander did not send this request*, followed by the same message and what to do. ## Your key | Status | Message | What to do | | - | - | - | | `401` | This credential is not an active xpander key. | The key is wrong, revoked, or missing from the call. Check the key your coding tool sends, or create a new one in [AI models & keys](https://chat.xpander.ai/?settings=my-gateway). | | `401` | This xpander key has expired. | Create a new key in [AI models & keys](https://chat.xpander.ai/?settings=my-gateway). | | `400` | Name the model to call in the request's model field. | Set `model` in the call. | ## The model | Status | Message | What to do | | - | - | - | | `403` | This model is not enabled for you on the xpander LLM Gateway. | Pick a model listed in [AI models & keys](https://chat.xpander.ai/?settings=my-gateway), or ask an admin to enable it in [Models](https://platform.xpander.ai/governance/model-access). A model served on your organization's own endpoint is called as `::`, the name `/v1/models` lists. | | `403` | Model calls for this model or this account are paused by your xpander admin. | An admin paused the model. Pick another model, or ask your admin. | | `403` | Your organization's LLM Gateway settings do not allow this kind of provider access for you. | The [license model](/run/llm-gateway/policies#license-model) for your group or agent does not allow how this call would be paid. Ask your admin. | ## Provider keys and endpoints | Status | Message | What to do | | - | - | - | | `403` | No provider key is set up for this model in your xpander organization. | An admin adds a key for the model's provider in [Models](https://platform.xpander.ai/governance/model-access) ([Providers and keys](/run/llm-gateway/providers-and-keys)). On a Hybrid or Air-Gapped install, every provider your people use needs a key of your own. | | `403` | Your organization has no ... key on the xpander LLM Gateway for this model. | An admin adds a key for the model's provider in [Models](https://platform.xpander.ai/governance/model-access) ([Providers and keys](/run/llm-gateway/providers-and-keys)). | | `403` | Your organization has no ... key stored in xpander for this model. Tools on your computer use the keys stored in xpander, not your own environment's credentials. | For people of a Hybrid organization: their coding tools connect through xpander cloud, which cannot use the credentials inside your install. An admin adds a key for the provider in [Models](https://platform.xpander.ai/governance/model-access). | | `403` | The model provider refused the key your organization set up for this model. | The provider rejected the stored key (revoked, expired, or without access to the model). An admin replaces it in [Models](https://platform.xpander.ai/governance/model-access). | | `403` | Your organization's ... key is stored without its endpoint. | An Azure key needs the endpoint it belongs to. An admin adds it next to the key ([Azure endpoint](/run/llm-gateway/providers-and-keys#azure-endpoint)). Any other model works meanwhile. | | `403` | The endpoint configured for this model's provider key is not a reachable provider address. | The endpoint points at an address the gateway does not call, such as a private address on xpander cloud. An admin sets the endpoint's public `https` address ([Model endpoints](/run/llm-gateway/providers-and-keys#model-endpoints-on-xpander-cloud)). | On xpander cloud, saving an endpoint at a private, loopback or cloud metadata address fails at once with *Model endpoints are called at public addresses here, so this endpoint was not saved*. ## Budgets, credits and rate limits | Status | Message | What to do | | - | - | - | | `429` | The daily / weekly / monthly spending limit set for this ... on the xpander LLM Gateway is reached until ... | A [budget](/run/llm-gateway/budgets-and-blocks) set to **Block** is spent. Wait for the time shown, or ask an admin to raise it. | | `402` | Your xpander organization reached its spending limit, so model calls are paused. | The organization limit is reached. An admin raises it in [Budgets](https://platform.xpander.ai/governance/budgets). | | `402` | Your xpander organization is out of credits, so model calls are paused. | An admin adds credits in billing. | | `403` | Your xpander account is paused, so model calls are not available. | Contact your xpander admin. | | `403` | Your xpander organization is not active, so model calls are paused. | An admin reactivates the organization. | | `429` | The request rate set for this ... is reached. | Retry in a minute. Coding tools and SDKs retry this on their own. | | `429` | Too many calls are running at once for this ... | Retry when one finishes. Coding tools and SDKs retry this on their own. | ## Your own Claude plan | Status | Message | What to do | | - | - | - | | `403` | Your own Claude plan is not enabled for this call on the xpander LLM Gateway ... | The message names what is missing: your organization does not allow your own plan for you, the call is not from Claude Code, or the model is not a Claude model from Anthropic. Sign out of the plan in Claude Code to use company models, or ask your admin. | | `429` | Your Claude plan's usage limit is reached until ..., and plan calls are set to wait for the plan rather than use company models. | Your plan is at its limit and your calls pause until it resets. Wait, or choose **Continue on company models** in [AI models & keys](https://chat.xpander.ai/?settings=my-gateway) when your organization allows it. | | `403` | Your Claude login expired. | Run `/login` in Claude Code, then retry. | | `403` | Anthropic did not allow this call on your Claude plan. | The model or feature is not part of your plan. Pick another model. | ## The gateway itself | Status | Message | What to do | | - | - | - | | `503` | The LLM Gateway could not load your organization's settings just now. | Retry in a few seconds. | | `503` | The LLM Gateway could not verify this key just now. | Retry in a few seconds. | | `503` | The LLM Gateway could not load the provider key for this model just now. | Retry in a few seconds. | | `404` | The LLM Gateway serves model calls only (messages, chat completions, responses, embeddings, token counting). | Call a model path: `/v1/messages` (and `/v1/messages/count_tokens`), `/v1/chat/completions`, `/v1/responses` or `/v1/embeddings`. `/v1/models` lists the models you may call. | | `403` | This call was routed to a model outside your organization's settings, so it was not sent. | Retry the call. | ### When the gateway is unavailable Agents call models only through the LLM Gateway. When it cannot be reached for 30 seconds or more: * Xpander Chat shows a banner: *AI gateway is unavailable. Agents can't run right now. We'll reconnect automatically.* * A new run or chat message is refused at once, and a run in progress stops at its next model call, with the card *This run stopped because the AI gateway is unavailable*. Retry once it is back. * Calls from coding tools and SDKs answer `503` with a `Retry-After` header. In the meantime, nothing is sent to a provider any other way. The gateway reconnects on its own, usually within a minute, and the banner clears. ## When the provider refuses When the call reached the provider and the provider refused it (for example, an invalid request or a model that does not exist), the provider's own error comes back unchanged. In Xpander Chat the card is titled *The model provider rejected this request*. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.