Maps a domain to an application. A user must be authorized to administer a domain in order to map it to an application. For a list of available authorized domains, see AuthorizedDomains.ListAuthorizedDomains.
HTTP request
POST https://appengine.googleapis.com/v1beta/{parent=apps/*}/domainMappings
Override strategy for mutating an existing mapping.
Enums
UNSPECIFIED_DOMAIN_OVERRIDE_STRATEGY
Strategy unspecified. Defaults to STRICT.
STRICT
Overrides not allowed. If a mapping already exists for the specified domain, the request will return an ALREADY_EXISTS (409).
OVERRIDE
Overrides allowed. If a mapping already exists for the specified domain, the request will overwrite it. Note that this might stop another Google product from serving. For example, if the domain is mapped to another App Engine application, that app will no longer serve from that domain.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-06-16 UTC."],[[["\u003cp\u003eThis document describes how to map a domain to an application using the App Engine Admin API, requiring admin authorization.\u003c/p\u003e\n"],["\u003cp\u003eThe HTTP request is a \u003ccode\u003ePOST\u003c/code\u003e operation to a specific URL, using gRPC Transcoding syntax.\u003c/p\u003e\n"],["\u003cp\u003eThe request requires a \u003ccode\u003eparent\u003c/code\u003e path parameter (application name) and can optionally include the \u003ccode\u003eoverrideStrategy\u003c/code\u003e query parameter to manage existing domain mappings.\u003c/p\u003e\n"],["\u003cp\u003eThe request body must contain a \u003ccode\u003eDomainMapping\u003c/code\u003e instance, and the response body will return an \u003ccode\u003eOperation\u003c/code\u003e instance upon success.\u003c/p\u003e\n"],["\u003cp\u003eAuthorization requires the \u003ccode\u003ehttps://www.googleapis.com/auth/cloud-platform\u003c/code\u003e OAuth scope, and different \u003ccode\u003eDomainOverrideStrategy\u003c/code\u003e options allow for managing existing mappings, such as strict no overrides or explicit overrides.\u003c/p\u003e\n"]]],[],null,["# Method: apps.domainMappings.create\n\n- [HTTP request](#body.HTTP_TEMPLATE)\n- [Path parameters](#body.PATH_PARAMETERS)\n- [Query parameters](#body.QUERY_PARAMETERS)\n- [Request body](#body.request_body)\n- [Response body](#body.response_body)\n- [Authorization Scopes](#body.aspect)\n- [DomainOverrideStrategy](#DomainOverrideStrategy)\n- [Try it!](#try-it)\n\nMaps a domain to an application. A user must be authorized to administer a domain in order to map it to an application. For a list of available authorized domains, see [`AuthorizedDomains.ListAuthorizedDomains`]().\n\n### HTTP request\n\n`POST https://appengine.googleapis.com/v1beta/{parent=apps/*}/domainMappings`\n\nThe URL uses [gRPC Transcoding](https://google.aip.dev/127) syntax.\n\n### Path parameters\n\n### Query parameters\n\n### Request body\n\nThe request body contains an instance of [DomainMapping](/appengine/docs/admin-api/reference/rest/v1beta/apps.domainMappings#DomainMapping).\n\n### Response body\n\nIf successful, the response body contains a newly created instance of [Operation](/appengine/docs/admin-api/reference/rest/Shared.Types/ListOperationsResponse#Operation).\n\n### Authorization Scopes\n\nRequires the following OAuth scope:\n\n- `https://www.googleapis.com/auth/cloud-platform`\n\nFor more information, see the [Authentication Overview](https://cloud.google.com/docs/authentication/).\n\nDomainOverrideStrategy\n----------------------\n\nOverride strategy for mutating an existing mapping."]]
