Update-MgEntitlementManagementAccessPackageAssignmentPolicy Serialization issue?

[William-Francillette]

Update-MgEntitlementManagementAccessPackageAssignmentPolicy is serialized as
PATCH /identityGovernance/entitlementManagement/accessPackage/{accessPackageId}/accessPackageAssignmentPolicies/{accessPackageAssignmentPolicyId}

however the doc refer to
PUT /identityGovernance/entitlementManagement/accessPackageAssignmentPolicies/{accessPackageAssignmentPolicyId}
https://learn.microsoft.com/en-us/graph/api/accesspackageassignmentpolicy-update?view=graph-rest-beta&tabs=http

this is the request:

$updateParameters=@{
    Displayname = "Initial Policy"
}
Update-MgEntitlementManagementAccessPackageAssignmentPolicy `
    -BodyParameter $UpdateParameters `
    -AccessPackageAssignmentPolicyId 'd46bda47-ec8e-4b62-8d94-3cd13e267a61' `
    -AccessPackageId  '5d05114c-b4d9-4ae7-bda6-4bade48e60f2' -debug

And this is the debug trace

DEBUG: [CmdletBeginProcessing]: - Update-MgEntitlementManagementAccessPackageAssignmentPolicy begin processing with parameterSet 'Update'.
DEBUG: [Authentication]: - AuthType: 'AppOnly', AuthProviderType: 'ClientCredentialProvider', ContextScope: 'Process', AppName: 'M365DSC'.
DEBUG: [Authentication]: - Scopes: [Policy.Read.ConditionalAccess, DeviceManagementManagedDevices.Read.All, Policy.ReadWrite.ConditionalAccess, User.ReadWrite.All, RoleManagement.Read.Directory, Policy.ReadWrite.ApplicationConfiguration, Application.Re
adWrite.All, Group.Read.All, Directory.ReadWrite.All, DeviceManagementServiceConfig.Read.All, Group.ReadWrite.All, Directory.Read.All, User.Read.All, Agreement.Read.All, DeviceManagementServiceConfig.ReadWrite.All, GroupMember.Read.All, Organization.Re
adWrite.All, DeviceManagementConfiguration.Read.All, DeviceManagementManagedDevices.ReadWrite.All, User.ManageIdentities.All, Organization.Read.All, RoleManagement.ReadWrite.Directory, GroupMember.ReadWrite.All, Policy.Read.All, DeviceManagementConfigu
ration.ReadWrite.All, Application.Read.All, DeviceManagementApps.ReadWrite.All, DeviceManagementApps.Read.All, EntitlementManagement.Read.All, EntitlementManagement.ReadWrite.All].
DEBUG: ============================ HTTP REQUEST ============================

HTTP Method:
PATCH

Absolute Uri:
https://graph.microsoft.com/beta/identityGovernance/entitlementManagement/accessPackages/5d05114c-b4d9-4ae7-bda6-4bade48e60f2/accessPackageAssignmentPolicies/d46bda47-ec8e-4b62-8d94-3cd13e267a61

Headers:


Body:
{
  "displayName": "Initial Policy"
}


DEBUG: ============================ HTTP RESPONSE ============================

Status Code:
NotFound

Headers:
Transfer-Encoding             : chunked
Vary                          : Accept-Encoding
Strict-Transport-Security     : max-age=31536000
request-id                    : 2419469b-4917-4ce4-9982-da185c44fa6f
client-request-id             : 2419469b-4917-4ce4-9982-da185c44fa6f
x-ms-ags-diagnostic           : {"ServerInfo":{"DataCenter":"UK South","Slice":"E","Ring":"3","ScaleUnit":"003","RoleInstance":"LO2PEPF000004E6"}}
Date                          : Mon, 21 Nov 2022 19:50:23 GMT

Body:
{
  "error": {
    "code": "",
    "message": "No HTTP resource was found that matches the request URI 'https://igaelm-asev3-ecapi-neu.igaelm-asev3-environment-neu.p.azurewebsites.net/api/v1/accessPackages('5d05114c-b4d9-4ae7-bda6-4bade48e60f2')/accessPackageAssignmentPolicies('d46b
da47-ec8e-4b62-8d94-3cd13e267a61')'.",
    "innerError": {
      "date": "2022-11-21T19:50:23",
      "request-id": "2419469b-4917-4ce4-9982-da185c44fa6f",
      "client-request-id": "2419469b-4917-4ce4-9982-da185c44fa6f"
    }
  }
}


Update-MgEntitlementManagementAccessPackageAssignmentPolicy : No HTTP resource was found that matches the request URI 
'https://igaelm-asev3-ecapi-neu.igaelm-asev3-environment-neu.p.azurewebsites.net/api/v1/accessPackages('5d05114c-b4d9-4ae7-bda6-4bade48e60f2')/accessPackageAssignmentPolicies('d46bda47-ec8e-4b62-8d94-3cd13e267a61')'.
At line:1 char:9
+         Update-MgEntitlementManagementAccessPackageAssignmentPolicy `
+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: ({ AccessPackage...gnmentPolicy1 }:<>f__AnonymousType311`3) [Update-MgEntitl...ntPolicy_Update], RestException`1
    + FullyQualifiedErrorId : Microsoft.Graph.PowerShell.Cmdlets.UpdateMgEntitlementManagementAccessPackageAssignmentPolicy_Update
DEBUG: [CmdletEndProcessing]: - Update-MgEntitlementManagementAccessPackageAssignmentPolicy end processing.

[peombwa]

Please use the Set-MgEntitlementManagementAccessPackageAssignmentPolicy command as shown in the API reference example at https://learn.microsoft.com/en-us/graph/api/accesspackageassignmentpolicy-update?view=graph-rest-beta&tabs=powershell#example-1-update-the-details-of-a-policy.

We will suppress the generation of Update-MgEntitlementManagementAccessPackageAssignmentPolicy in future releases.