Sets the IAM policy for the specified Access Context Manager access policy. This method replaces the existing IAM policy on the access policy. The IAM policy controls the set of users who can perform specific operations on the Access Context Manager access policy.
HTTP request
POST https://accesscontextmanager.googleapis.com/v1alpha/{resource=accessPolicies/*}:setIamPolicy
REQUIRED: The complete policy to be applied to the resource. The size of the policy is limited to a few 10s of KB. An empty policy is a valid policy but certain Google Cloud services (such as Projects) might reject them.
OPTIONAL: A FieldMask specifying which fields of the policy to modify. Only the fields in the mask will be modified. If no mask is provided, the following default mask is used:
paths: "bindings, etag"
This is a comma-separated list of fully qualified names of fields. Example: "user.displayName,photo".
Response body
If successful, the response body contains an instance of Policy.
[[["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 2025-07-17 UTC."],[[["\u003cp\u003eThis endpoint sets the IAM policy for a specified Access Context Manager access policy, replacing the existing policy.\u003c/p\u003e\n"],["\u003cp\u003eThe HTTP request uses \u003ccode\u003ePOST\u003c/code\u003e to a specific URL that includes the resource path, following gRPC Transcoding syntax.\u003c/p\u003e\n"],["\u003cp\u003eThe request body requires a JSON representation including a \u003ccode\u003epolicy\u003c/code\u003e object and an optional \u003ccode\u003eupdateMask\u003c/code\u003e string for modifying specific policy fields.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eresource\u003c/code\u003e path parameter is a required string indicating the Access Context Manager resource to which the policy is applied.\u003c/p\u003e\n"],["\u003cp\u003eA successful request will return a \u003ccode\u003ePolicy\u003c/code\u003e instance in the response body, and the operation requires the \u003ccode\u003ehttps://www.googleapis.com/auth/cloud-platform\u003c/code\u003e OAuth scope.\u003c/p\u003e\n"]]],[],null,["# Method: accessPolicies.setIamPolicy\n\n- [HTTP request](#body.HTTP_TEMPLATE)\n- [Path parameters](#body.PATH_PARAMETERS)\n- [Request body](#body.request_body)\n - [JSON representation](#body.request_body.SCHEMA_REPRESENTATION)\n- [Response body](#body.response_body)\n- [Authorization scopes](#body.aspect)\n- [Try it!](#try-it)\n\nSets the IAM policy for the specified Access Context Manager [access policy](/access-context-manager/docs/reference/rest/v1alpha/accessPolicies#AccessPolicy). This method replaces the existing IAM policy on the access policy. The IAM policy controls the set of users who can perform specific operations on the Access Context Manager [access policy](/access-context-manager/docs/reference/rest/v1alpha/accessPolicies#AccessPolicy).\n\n### HTTP request\n\n`POST https://accesscontextmanager.googleapis.com/v1alpha/{resource=accessPolicies/*}:setIamPolicy`\n\nThe URL uses [gRPC Transcoding](https://google.aip.dev/127) syntax.\n\n### Path parameters\n\n### Request body\n\nThe request body contains data with the following structure:\n\n### Response body\n\nIf successful, the response body contains an instance of [Policy](/access-context-manager/docs/reference/rest/Shared.Types/Policy).\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](/docs/authentication#authorization-gcp)."]]
