> ## Documentation Index > Fetch the complete documentation index at: https://developer.jtl-software.com/llms.txt > Use this file to discover all available pages before exploring further. # Save Shop Languages > Replaces the complete set of languages assigned to a shop. The request describes the desired state: listed languages are assigned, all others are unassigned. The call is idempotent, so it is safe to retry. The list must not be empty, and exactly one language must be marked as default. Codes are case-insensitive and returned in lowercase; languages without an ISO 639-1 code cannot be assigned. Unlike the customer groups on the same shop, this command never answers 409; there is no replacement concept for a removed language. Returns the resulting assignments. Concurrency: last write wins; concurrent calls for the same shop overwrite each other without a conflict error. Side effect: the change is queued for synchronization to the shop. If queuing fails, the assignments are already saved but an error is returned; repeat the call to recover. ## OpenAPI ````yaml /openapi/erp/2.2.json put /v2/sales-channels/{salesChannelId}/shop/languages openapi: 3.0.0 info: title: JTL-WAWI API (Cloud) description: "JTL-Wawi-Version: 2.3.0-alpha.261014180923+Sha.2e7c872\r\n# Introduction\r\n\r\nWelcome to the JTL-WAWI technical API documentation. This guide is here to help developers understand how our REST API works and how it can be integrated into your existing systems. We'll delve into the details of authentication and data manipulation processes, providing clear examples along the way. Whether you're a developer or an IT professional, this documentation aims to give you a practical understanding, laying the groundwork for effectively using the JTL-WAWI API to enhance your processes.\r\n\r\n# Authentication\r\n\r\nYou register your application with the API by sending a POST request with the required information and corresponding keys. You can find the exact request details at https://developer.jtl-software.com/products/erp/swagger/appregistration. This information has to include the following:\r\n\r\n* AppId\r\n* DisplayName\r\n* Description\r\n* Version\r\n* ProviderName\r\n* ProviderWebsite\r\n* MandatoryApiScopes\r\n\r\nThis data is crucial for identifying and registering your application with the API. The API uses it to generate a temporary authentication ID that allows your application to access the necessary resources. After successful validation of this information, you will receive the API key required for future authentication and API requests.\r\n\r\nBefore you can begin the registration process, you must open JTL-Wawi (new interface) and start the registration process under 'Admin->App registration'. Only at this point are you authorised to send the first API call. This step in JTL-Wawi ensures that your application is properly registered and has permission to use the API.\r\n\r\nThe API will send you an authentication ID in the form of a token. Once you have received this token and successfully completed the registration in JTL-Wawi, you will send another request to the API by including this authentication ID in the URL path.\r\n\r\nAfter successful validation of this second request by the API and confirmation of the correct information, you will be provided with the actual API key. It is important to note that this API key will not be displayed again!\r\n\r\nThis API key will be used in the future to authenticate requests to the API. It is of utmost importance that you securely store the API key upon receipt, as it cannot be retrieved from any other location in the system." contact: name: JTL-Software-GmbH url: https://developer.jtl-software.com/ email: partner@jtl-software.com version: '2.2' x-application-version: 2.3.0.0 servers: - url: https://api.jtl-cloud.com/erp description: Production Environment Cloud API Gateway security: [] tags: - name: WMS description: >-

Query all pick lists for a specific wms warehouse that are not completed. - name: Wawi App description: >-

Get a specific customer - name: Warehouses description: >-

Queries all storage locations for a given warehouse. - name: Units description: Development - name: Transaction Status description: >-

Queries all transaction statuses for a sales order. - name: Tax description: >-

Returns the tax rate for the given item. - name: Inventory description: >-

Queries stocks for a specific item, warehouse or storage location. - name: Sales Order description: >-

Queries all cancellation reasons for sales orders. - name: Sales Invoice Correction description: >-

Queries all cancellation reasons for sales invoice corrections. - name: Return description: >-

Create a new return with associated items and packages. - name: Item description: >-

Queries all responsible persons. - name: Refund description: >-

Queries all cancellation reasons for refunds. - name: Property description: >-

Queries all properties of items. - name: Printer description: >-

Retrieves all installed printers. - name: Master Data description: >-

Queries all on hold reasons for sales orders. - name: Manufacturer description: Development - name: Label description: Development - name: Sales Invoice description: >-

Gets a specific invoice. - name: Info description: >-

Returns the status of the API. - name: Features description: >-

Returns the available feature sets with release state and API version. - name: Extensibility description: >-

Returns the installed extensions. - name: Shipment description: Development - name: Delivery Note description: >-

Queries all delivery notes. - name: Custom Field description: Development - name: Customer description: >-

Deletes a specific customer. - name: Authentication description: >-

DEPRECATED seit Wawi 2.2.0: No-Op. Seit Wawi 2.1.0 registriert sich die Wawi selbst per JWT. - name: Attribute description: Development - name: Sales Quotation description: >-

Execute the printing of a sales quotation - name: Production - name: Resources - name: Company - name: Sales Orders - name: Marketplace Order - name: Marketplace Offer - name: Marketplace Invoicing - name: Sales Channel - name: Payment - name: Warehouse Assistant - name: Worker paths: /v2/sales-channels/{salesChannelId}/shop/languages: put: tags: - wawi - Sales Channel summary: Save Shop Languages description: >- Replaces the complete set of languages assigned to a shop. The request describes the desired state: listed languages are assigned, all others are unassigned. The call is idempotent, so it is safe to retry. The list must not be empty, and exactly one language must be marked as default. Codes are case-insensitive and returned in lowercase; languages without an ISO 639-1 code cannot be assigned. Unlike the customer groups on the same shop, this command never answers 409; there is no replacement concept for a removed language. Returns the resulting assignments. Concurrency: last write wins; concurrent calls for the same shop overwrite each other without a conflict error. Side effect: the change is queued for synchronization to the shop. If queuing fails, the assignments are already saved but an error is returned; repeat the call to recover. operationId: Shop_SaveShopLanguages parameters: - name: salesChannelId in: path required: true description: >- Sales channel id of the JTL-Wawi-managed online shop whose languages are replaced. Opaque, tenant-local composite identifier (not a UUID); use the value returned by a sales channel listing. schema: type: string - name: x-tenant-id in: header required: true schema: type: string format: uuid description: The tenant ID for the target ERP instance. requestBody: x-name: SaveShopLanguagesRequest description: '' content: application/json: schema: $ref: >- #/components/schemas/JTL.Wawi.Verkaufskanaele.PublicApi.Endpoints.V2.Shop.SaveShopLanguagesRequest required: true x-position: 1 responses: '200': description: >- Successfully replaced the shop languages. Returns the resulting assignments with their canonical codes and resolved language names. content: application/json: schema: $ref: >- #/components/schemas/JTL.Wawi.Verkaufskanaele.PublicApi.DataTransferObjects.V2.Shop.SaveShopLanguagesCommandResponse '400': description: >- The language list is empty; no assignment or more than one assignment is marked as the default; a submitted Iso does not match the accepted form; a submitted Iso does not resolve to a language in JTL-Wawi's language master data; or the same language is named more than once (compared case-insensitively). No assignment is changed. content: application/json: schema: $ref: '#/components/schemas/FastEndpoints.ProblemDetails' '401': description: Unauthorized. content: application/json: schema: $ref: '#/components/schemas/FastEndpoints.ProblemDetails' '403': description: Forbidden. content: application/json: schema: $ref: '#/components/schemas/FastEndpoints.ProblemDetails' '404': description: >- Malformed sales channel id, the sales channel does not name an online-shop channel, or the named shop is not managed by JTL-Wawi. content: application/json: schema: $ref: '#/components/schemas/FastEndpoints.ProblemDetails' '500': description: Internal server error. content: application/json: schema: $ref: '#/components/schemas/FastEndpoints.ProblemDetails' security: - oauth2-authorization-code: - saleschannels.write - oauth2-client-credentials: - saleschannels.write components: schemas: JTL.Wawi.Verkaufskanaele.PublicApi.Endpoints.V2.Shop.SaveShopLanguagesRequest: type: object description: >- Request model for SaveShopLanguages command endpoint. Route parameters bind from the route, query parameters from the query string, everything else from the body. additionalProperties: false required: - languages properties: languages: type: array description: >- The complete desired set of languages for the shop. Any language currently assigned but not contained in this list is unassigned. Must contain at least one entry, exactly one of which is marked as the default. items: $ref: >- #/components/schemas/JTL.Wawi.Verkaufskanaele.PublicApi.DataTransferObjects.V2.Shop.ShopLanguageIsoAssignment JTL.Wawi.Verkaufskanaele.PublicApi.DataTransferObjects.V2.Shop.SaveShopLanguagesCommandResponse: type: object description: >- Replaces the complete set of languages assigned to a shop. The request describes the desired state: listed languages are assigned, all others are unassigned. The call is idempotent, so it is safe to retry. The list must not be empty, and exactly one language must be marked as default. Codes are case-insensitive and returned in lowercase; languages without an ISO 639-1 code cannot be assigned. Unlike the customer groups on the same shop, this command never answers 409; there is no replacement concept for a removed language. Returns the resulting assignments. Concurrency: last write wins; concurrent calls for the same shop overwrite each other without a conflict error. Side effect: the change is queued for synchronization to the shop. If queuing fails, the assignments are already saved but an error is returned; repeat the call to recover. - Response additionalProperties: false required: - languages properties: languages: type: array description: >- The persisted language assignments, in the order submitted, with each code normalized to its canonical lowercase form and its names resolved from JTL-Wawi's language master data. "IsAssigned" is true on every entry; this list is the assignment set, not the catalogue returned by "GET /v2/sales-channels/{salesChannelId}/shop/languages" or "QueryShopLanguages". items: $ref: >- #/components/schemas/JTL.Wawi.Verkaufskanaele.PublicApi.DataTransferObjects.V2.Shop.ShopLanguageListItem FastEndpoints.ProblemDetails: type: object additionalProperties: false properties: type: type: string default: https://www.rfc-editor.org/rfc/rfc7231#section-6.5.1 title: type: string default: One or more validation errors occurred. status: type: integer format: int32 default: 400 instance: type: string default: /api/route traceId: type: string default: 0HMPNHL0JHL76:00000001 detail: type: string errors: type: array items: $ref: '#/components/schemas/FastEndpoints.ProblemDetails_Error' JTL.Wawi.Verkaufskanaele.PublicApi.DataTransferObjects.V2.Shop.ShopLanguageIsoAssignment: type: object description: >- A language to assign to a shop, identified by its ISO 639-1 code (case-insensitive; returned in lowercase). additionalProperties: false required: - iso - isDefault properties: iso: type: string description: >- ISO 639-1 code of the language to assign, e.g. de. Case-insensitive; the response returns lowercase. Only the format is validated; the code must match a language that exists in JTL-Wawi, otherwise the request fails with 400. Region-qualified tags (e.g. de-AT) are not accepted. isDefault: type: boolean description: >- This language is the shop default language. Exactly one assignment in the request must set this flag. JTL.Wawi.Verkaufskanaele.PublicApi.DataTransferObjects.V2.Shop.ShopLanguageListItem: type: object description: >- A language available in JTL-Wawi, with its assignment state for a JTL-Wawi-managed online shop. additionalProperties: false required: - iso - isAssigned - isDefault properties: iso: type: string description: >- ISO 639-1 language code in lowercase, e.g. de. Identifies the language. Only the format is validated. Languages without an ISO 639-1 code are currently not listed. The value is currently always a two-letter code; the format may later be extended to BCP 47 language tags (e.g. de-AT) without breaking clients that validate against the published pattern. nameGerman: type: string description: >- German name of the language as stored in JTL-Wawi's language master data, or null if unset. nameEnglish: type: string description: >- English name of the language as stored in JTL-Wawi's language master data, or null if unset. isAssigned: type: boolean description: This language is currently assigned to the shop. isDefault: type: boolean description: >- This language is the shop default language. Only meaningful while IsAssigned is true. FastEndpoints.ProblemDetails_Error: type: object additionalProperties: false properties: name: type: string default: Error or field name reason: type: string default: Error reason code: type: string severity: type: string securitySchemes: oauth2-authorization-code: type: oauth2 flows: authorizationCode: authorizationUrl: https://id.jtl-cloud.com/oauth/v2/authorize tokenUrl: https://id.jtl-cloud.com/oauth/v2/token scopes: inventories.write: Grants permission to modify stock levels. inventory.read: Grants permission to read stock levels. inventory.write: Grants permission to modify stock levels. warehouse.read: Grants permission to read warehouse data. items.read: Grants permission to read item data. items.write: Grants permission to create and modify item data. procurements.read: Beschaffung lesen saleschannels.read: Grants permission to read sales channels. saleschannels.write: Grants permission to create and modify sales channels. scxoffers.read: Read SCX offers all.read: Allows the application to read all data. customers.read: Grants permission to read customer data. customers.write: Grants permission to create and modify customer data. customfields.read: Grants permission to read custom fields. customfields.write: Grants permission to create and modify custom fields. deliveries.read: Grants permission to read deliveries. deliveries.write: Grants permission to create and modify deliveries. deliverynotes.print: Grants permission to print and output delivery notes. deliverynotes.read: Grants permission to read delivery notes. deliverynotes.write: Grants permission to create and modify delivery notes. extensibility.integration: >- Grants permission to manage extensions and integrations of the JTL-Wawi. inventories.read: Grants permission to read stock levels. invoices.read: Grants permission to read invoices. invoices.write: Grants permission to create and modify invoices. labels.read: Grants permission to read labels. labels.write: Grants permission to create and modify labels. masterdata.read: >- Read master data such as shipping methods, payment methods, color codes and tax classes. orders.read: Grants permission to read orders. picklists.read: Grants permission to read pick lists. picklists.write: Grants permission to create and modify pick lists. returns.read: Grants permission to read returns. returns.write: Grants permission to create and modify returns. salesinvoicecorrections.read: Grants permission to read invoice corrections. salesinvoicecorrections.write: Grants permission to create and modify invoice corrections. salesorders.print: Grants permission to print and output sales orders. salesorders.read: Grants permission to read sales orders. salesorders.write: Grants permission to create and modify sales orders. system.config.read: Grants permission to read the system configuration. system.config.write: Grants permission to modify the system configuration. taxes.read: Grants permission to read tax data. wawiapp.all: Grants access to Wawi app related operations. currencies.read: Grants read access to currencies. jera.read: Grants read access to JERA internal endpoints. paymentmethods.read: Grants read access to payment methods. payments.read: Ermöglicht den Lesezugriff auf Zahlungen. payments.write: Ermöglicht den Schreibzugriff auf Zahlungen. salesinvoicecorrections.print: Grants permission to print and output invoice corrections. salesinvoices.print: Grants permission to print and output sales invoices. salesinvoices.read: Grants read access to sales invoices. salesinvoices.write: Grants write access to sales invoices. salesquotations.print: Grants permission to print and output sales quotations. salesquotations.read: Grants read access to sales quotations. salesquotations.write: Grants write access to sales quotations. system.worker.read: Worker-Synchronisationen lesen system.worker.write: Worker-Synchronisationen schreiben resources.read: Grants permission to read resource management data. resources.write: Grants permission to create and modify resource management data. pps.read: Grants permission to read production data. pps.write: Grants permission to create and modify production data. channels.read: Grants permission to read marketplace channels. invoices.print: >- Grants permission to print marketplace external documents (invoices, credit notes). marketplaceoffers.read: Grants permission to read marketplace offers and offer failures. marketplaceoffers.write: Grants permission to create and modify marketplace offers. notifications.read: Grants permission to read marketplace notifications. orders.write: >- Grants permission to modify marketplace order data (exclude/reset cancellation, payment, return and shipping uploads). masterdata.write: Write master data taxes.write: Grants permission to create and modify tax data. application.runas: >- Allows the application to execute requests on behalf of another user. oauth2-client-credentials: type: oauth2 flows: clientCredentials: tokenUrl: https://id.jtl-cloud.com/oauth/v2/token scopes: inventories.write: Grants permission to modify stock levels. inventory.read: Grants permission to read stock levels. inventory.write: Grants permission to modify stock levels. warehouse.read: Grants permission to read warehouse data. items.read: Grants permission to read item data. items.write: Grants permission to create and modify item data. procurements.read: Beschaffung lesen saleschannels.read: Grants permission to read sales channels. saleschannels.write: Grants permission to create and modify sales channels. scxoffers.read: Read SCX offers all.read: Allows the application to read all data. customers.read: Grants permission to read customer data. customers.write: Grants permission to create and modify customer data. customfields.read: Grants permission to read custom fields. customfields.write: Grants permission to create and modify custom fields. deliveries.read: Grants permission to read deliveries. deliveries.write: Grants permission to create and modify deliveries. deliverynotes.print: Grants permission to print and output delivery notes. deliverynotes.read: Grants permission to read delivery notes. deliverynotes.write: Grants permission to create and modify delivery notes. extensibility.integration: >- Grants permission to manage extensions and integrations of the JTL-Wawi. inventories.read: Grants permission to read stock levels. invoices.read: Grants permission to read invoices. invoices.write: Grants permission to create and modify invoices. labels.read: Grants permission to read labels. labels.write: Grants permission to create and modify labels. masterdata.read: >- Read master data such as shipping methods, payment methods, color codes and tax classes. orders.read: Grants permission to read orders. picklists.read: Grants permission to read pick lists. picklists.write: Grants permission to create and modify pick lists. returns.read: Grants permission to read returns. returns.write: Grants permission to create and modify returns. salesinvoicecorrections.read: Grants permission to read invoice corrections. salesinvoicecorrections.write: Grants permission to create and modify invoice corrections. salesorders.print: Grants permission to print and output sales orders. salesorders.read: Grants permission to read sales orders. salesorders.write: Grants permission to create and modify sales orders. system.config.read: Grants permission to read the system configuration. system.config.write: Grants permission to modify the system configuration. taxes.read: Grants permission to read tax data. wawiapp.all: Grants access to Wawi app related operations. currencies.read: Grants read access to currencies. jera.read: Grants read access to JERA internal endpoints. paymentmethods.read: Grants read access to payment methods. payments.read: Ermöglicht den Lesezugriff auf Zahlungen. payments.write: Ermöglicht den Schreibzugriff auf Zahlungen. salesinvoicecorrections.print: Grants permission to print and output invoice corrections. salesinvoices.print: Grants permission to print and output sales invoices. salesinvoices.read: Grants read access to sales invoices. salesinvoices.write: Grants write access to sales invoices. salesquotations.print: Grants permission to print and output sales quotations. salesquotations.read: Grants read access to sales quotations. salesquotations.write: Grants write access to sales quotations. system.worker.read: Worker-Synchronisationen lesen system.worker.write: Worker-Synchronisationen schreiben resources.read: Grants permission to read resource management data. resources.write: Grants permission to create and modify resource management data. pps.read: Grants permission to read production data. pps.write: Grants permission to create and modify production data. channels.read: Grants permission to read marketplace channels. invoices.print: >- Grants permission to print marketplace external documents (invoices, credit notes). marketplaceoffers.read: Grants permission to read marketplace offers and offer failures. marketplaceoffers.write: Grants permission to create and modify marketplace offers. notifications.read: Grants permission to read marketplace notifications. orders.write: >- Grants permission to modify marketplace order data (exclude/reset cancellation, payment, return and shipping uploads). masterdata.write: Write master data taxes.write: Grants permission to create and modify tax data. application.runas: >- Allows the application to execute requests on behalf of another user. ````