> For the complete documentation index, see [llms.txt](https://help.mimeeq.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.mimeeq.com/api/customer/update-customer-languages.md).

# Update Customer Languages

Replace the customer languages.

Read Customer first and preserve every supported language that should remain available to localized resources.

### Behaviour

Submit exactly one default language; omitted languages are removed.

Requires the `customer:write` scope.

```json
{"openapi":"3.1.0","info":{"title":"Mimeeq External API","version":"1.1.0"},"tags":[{"name":"Customer","description":"Read and maintain the Mimeeq account associated with your API key. This is your account-level identity and configuration, rather than a company or a contact stored inside the account.\n\nUse this section to read account settings before synchronizing contact details, supported languages, currencies, markets, or public price-list groups. These settings provide reference values used by other API resources.\n\n## What you can do\n\n| Task | Reference |\n| --- | --- |\n| Find available customer | [List Customer](https://help.mimeeq.com/developers/customer/list-customer) |\n| Change customer contact | [Update Customer Contact](https://help.mimeeq.com/developers/customer/update-customer-contact) |\n| Change customer languages | [Update Customer Languages](https://help.mimeeq.com/developers/customer/update-customer-languages) |\n| Change customer pricing | [Update Customer Pricing](https://help.mimeeq.com/developers/customer/update-customer-pricing) |\n\n## Before you start\n\nYour API key needs `customer:read` to read these resources. Use `customer:write` for write operations.\n\n## Important behaviour\n\nRead the current customer first. Contact, language and pricing updates replace their respective submitted settings; send the complete values you intend to keep. Exactly one language and one currency must be the default. Theme values are returned for reference; these endpoints do not edit the theme or upload a logo."}],"servers":[{"url":"https://admin.mimeeqapi.com","description":"Production API"}],"security":[{"apiKey":[]}],"components":{"securitySchemes":{"apiKey":{"type":"http","scheme":"bearer","description":"API key sent as a bearer token (mk_live_… / mk_test_…)."}},"schemas":{"CustomerMutation2":{"type":"object","properties":{"data":{"type":"object","properties":{"languages":{"type":"array","items":{"type":"object","properties":{"id":{"type":"string"},"code":{"type":"string"},"isDefault":{"type":"boolean"}},"required":["id","code","isDefault"],"additionalProperties":false}}},"required":["languages"],"additionalProperties":false}},"required":["data"],"additionalProperties":false,"description":"Data schema used by Update Customer Languages (PUT /v1/customer/languages). Read that operation for usage, permissions and update rules. Required fields and allowed values are defined below; request and response shapes can differ."},"PublicError":{"description":"An API error response. Use code and the HTTP status to classify the failure, message and optional details for context, and requestId when reporting it. Edge firewall responses may omit requestId.","type":"object","required":["code","message"],"properties":{"code":{"type":"string"},"message":{"type":"string"},"requestId":{"type":"string","description":"Present on every error the API itself returns; absent when the edge firewall rejected the request."},"details":{"description":"Optional error-specific details (e.g. per-field validation reasons)."}}},"CustomerLanguagesRequest":{"type":"object","properties":{"languages":{"minItems":1,"type":"array","items":{"type":"object","properties":{"id":{"type":"string","minLength":1},"code":{"type":"string","minLength":2,"maxLength":10,"description":"Language code to translate localized fields to (falls back if unavailable)."},"isDefault":{"type":"boolean"}},"required":["id","code","isDefault"],"additionalProperties":false}}},"required":["languages"],"additionalProperties":false,"description":"Data schema used by Update Customer Languages (PUT /v1/customer/languages). Read that operation for usage, permissions and update rules. Required fields and allowed values are defined below; request and response shapes can differ."}}},"paths":{"/v1/customer/languages":{"put":{"summary":"Update Customer Languages","tags":["Customer"],"description":"Replace the customer languages.\n\nRead Customer first and preserve every supported language that should remain available to localized resources.\n\n## Behaviour\n\nSubmit exactly one default language; omitted languages are removed.\n\nRequires the `customer:write` scope.","responses":{"200":{"description":"Successful response.","headers":{"RateLimit-Limit":{"description":"Requests that can be admitted at once (the tier burst).","schema":{"type":"integer"}},"RateLimit-Remaining":{"description":"Tokens left after this request.","schema":{"type":"integer"}},"RateLimit-Reset":{"description":"Seconds until the bucket is full again.","schema":{"type":"integer"}}},"content":{"application/json":{"schema":{"$ref":"#/components/schemas/CustomerMutation2"}}}},"400":{"description":"Invalid request data.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/PublicError"}}},"headers":{"RateLimit-Limit":{"description":"Requests that can be admitted at once (the tier burst).","schema":{"type":"integer"}},"RateLimit-Remaining":{"description":"Tokens left after this request.","schema":{"type":"integer"}},"RateLimit-Reset":{"description":"Seconds until the bucket is full again.","schema":{"type":"integer"}}}},"401":{"description":"Missing or invalid API key.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/PublicError"}}}},"403":{"description":"The API key lacks the required scope (`scope_denied`), or the operation is not permitted for this account (`operation_not_permitted`).","content":{"application/json":{"schema":{"$ref":"#/components/schemas/PublicError"}}},"headers":{"RateLimit-Limit":{"description":"Requests that can be admitted at once (the tier burst).","schema":{"type":"integer"}},"RateLimit-Remaining":{"description":"Tokens left after this request.","schema":{"type":"integer"}},"RateLimit-Reset":{"description":"Seconds until the bucket is full again.","schema":{"type":"integer"}}}},"429":{"description":"The API key exceeded its request rate (`rate_limit_exceeded`) or its monthly quota (`quota_exceeded`). Both carry `Retry-After`; the `RateLimit-*` headers accompany `rate_limit_exceeded` only, since a spent quota says nothing about the bucket.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/PublicError"}}},"headers":{"Retry-After":{"description":"Seconds to wait before retrying.","schema":{"type":"integer"}},"RateLimit-Limit":{"description":"Requests that can be admitted at once (the tier burst).","schema":{"type":"integer"}},"RateLimit-Remaining":{"description":"Tokens left after this request.","schema":{"type":"integer"}},"RateLimit-Reset":{"description":"Seconds until the bucket is full again.","schema":{"type":"integer"}}}},"500":{"description":"Internal server error.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/PublicError"}}},"headers":{"RateLimit-Limit":{"description":"Requests that can be admitted at once (the tier burst).","schema":{"type":"integer"}},"RateLimit-Remaining":{"description":"Tokens left after this request.","schema":{"type":"integer"}},"RateLimit-Reset":{"description":"Seconds until the bucket is full again.","schema":{"type":"integer"}}}}},"requestBody":{"required":true,"content":{"application/json":{"schema":{"$ref":"#/components/schemas/CustomerLanguagesRequest"}}}}}}}}
```


---

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