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196196| `Couldn't read your Zed keymap` / `Couldn't back up your Zed keymap` / `Couldn't update your Zed keymap` | [Command-line errors](#terminal-setup-left-your-zed-keymap-unchanged) |
197197| `Your Zed keymap isn't a readable list of keybindings` | [Command-line errors](#terminal-setup-left-your-zed-keymap-unchanged) |
198198| `Skill usage reports are not available on this connection.` | [Command-line errors](#skill-usage-reports-are-not-available-on-this-connection) |
199| `Custom output styles can't be selected over Remote Control or from a relayed message` | [Command-line errors](#custom-output-styles-cant-be-selected-over-remote-control) |
200| `Output styles are saved to local settings (.claude/settings.local.json), which this session doesn't load` | [Command-line errors](#output-styles-are-saved-to-local-settings-which-this-session-doesnt-load) |
199201| `` `plugin eval` is currently in early access `` / `` `plugin eval` is currently unavailable `` | [Plugin errors](#plugin-eval-is-currently-in-early-access) |
200202| `Marketplace "<name>" is registered from an untrusted source` | [Plugin errors](#marketplace-is-registered-from-an-untrusted-source) |
201203| `references ${user_config.*} in a shell-form command` | [Plugin errors](#plugin-command-references-user-config) |
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17611763Resolve the named error first; `/compact` fails on the same error until you do. Before v2.1.229, a failed automatic compaction surfaced `Prompt is too long` without the cause.
17621764
1765When automatic compaction runs on this error, it normally summarizes your oldest exchanges and keeps the newest. As a last resort, Claude Code summarizes differently:
1766
1767* When it can't summarize any whole exchange, Claude Code keeps your newest prompt word for word and summarizes everything before it.
1768* In that case, when the conversation doesn't end with your prompt, Claude Code summarizes the whole conversation instead.
1769
1770Claude Code skips this recovery when the content it would carry forward holds no model reply and less than about 1,000 tokens of your own text, such as a short retry sent after an oversized paste. Run `/clear` to start fresh. Before v2.1.269, compaction failed whenever it couldn't summarize a whole exchange, so a session in that state hit this error again on every turn.
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17631772A single-exchange conversation has no earlier turns to summarize. When automatic compaction would have run on one, Claude Code skips the attempt and explains what fills the request instead. When the API doesn't report token counts in its error, the message reads:
17641773
17651774```text theme={null}
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17821791
17831792**What to do:**
17841793
1785* In a multi-turn conversation, run `/compact` to summarize earlier turns and free space, or `/clear` to start fresh. A single-exchange conversation can't be compacted, so shrink the request instead
1794* Run `/compact` to summarize earlier turns and free space, or `/clear` to start fresh. If `/compact` answers `Not enough messages to compact.`, the conversation is a single exchange with nothing earlier to summarize, so the space is taken by that one prompt and what Claude Code sends with every request: run `/clear` and resend with less pasted text or smaller attachments, or reduce the tool definitions and memory files using the steps below
17861795* Run `/context` to see a breakdown of what is consuming the window: system prompt, tools, memory files, and messages
17871796* Disable MCP servers you are not using with `/mcp disable <name>` to remove their tool definitions from context
17881797* Trim large `CLAUDE.md` memory files, or move instructions into [path-scoped rules](/docs/en/memory#path-specific-rules) that load only when relevant
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19711980### Model is not a recognized model id
19721981
1973The model string you passed to a model switch isn't a model alias, a model ID this Claude Code version knows, or an ID that starts with `claude-`. The usual causes are a typo in the ID, a display name such as `Sonnet 5` where the ID `claude-sonnet-5` is expected, or an alias that only newer Claude Code versions recognize. Claude Code rejects the switch immediately. Before v2.1.200, Claude Code saved the string and failed on the next request with [There's an issue with the selected model](#theres-an-issue-with-the-selected-model).
1974
1975```text theme={null}
1976Model "claud-sonnet-5" is not a recognized model id. Did you mean 'claude-sonnet-5'?
1977```
1978
1979The trailing hint names the closest matching alias or model ID. When nothing is close enough, it reads `Run /model to see available models.` instead.
1980
1981Claude Code produces this error locally at the moment the switch is requested, before any API request is made. It applies when a model is set through the [Agent SDK](/docs/en/agent-sdk/typescript) `setModel()` method, by an app such as the [Desktop app](/docs/en/desktop) that runs the Claude Code CLI for you, or when you pick a model from a device connected through [Remote Control](/docs/en/remote-control). Before v2.1.260, the check didn't cover Remote Control picks, so Claude Code applied the pick and the next request failed with [There's an issue with the selected model](#theres-an-issue-with-the-selected-model).
1982
1983**What to do:**
1984
1985* Run `/model` with no argument to open the picker and choose from the models available to your account, then pass the alias or ID shown there
1986* If you used an alias that a newer Claude Code version supports, run `claude update`. A full ID that starts with `claude-` passes this local check even when the model is newer than your Claude Code version. The server can still require a minimum version for that model; see [Claude Code does not support this model](#claude-code-does-not-support-this-model).
1987* A model saved before v2.1.200 isn't repaired by this check. If a stale value keeps coming back, remove it from the locations listed under [Setting your model](/docs/en/model-config#setting-your-model).
1988* The check runs only on the Anthropic API. On any other provider or gateway, including a custom `ANTHROPIC_BASE_URL`, the provider defines the model names, so Claude Code accepts
1982The model string you passed to a model switch isn't a model alias, a model ID this Claude Code version knows, or an ID that starts with `claude-`. The usual causes are a typo in the ID, a display name such as `Sonnet 5` where the ID `claude-sonnet-5` is expected, or an alias that only newer Claude Code versions recognize. Claude Code rejects the switch immediately. Before v2.1.200, Claude Code saved the string and failed on the next request with [There's an issue with the selected model](#t