Cant create user over Graph API in Azure AD B2C property not present-CodePudding

Currently trying to create a user in a Azure AD B2C over the Graph API but keep getting following error: (I did not delete the property name between the '' there is none...)

Code: Request_ResourceNotFound
Message: Resource '' does not exist or one of its queried reference-property objects are not present.
Inner error:
    AdditionalData:
    date: 2021-10-12T11:22:34
    request-id: f45d65b3-61b1-492c-b6cb-fc43bb3805dd
    client-request-id: f45d65b3-61b1-492c-b6cb-fc43bb3805dd
ClientRequestId: f45d65b3-61b1-492c-b6cb-fc43bb3805dd

Following Code is used to create the User

IDictionary<string, object> extensionInstance = new Dictionary<string, object>();
extensionInstance.Add($"extension_{AadB2CConfiguration.ExtensionsID}_GUID", guid);

new User
{
    DisplayName = username,
    AccountEnabled = true,
    Identities = new List<ObjectIdentity>
        {
            new ObjectIdentity()
            {
                SignInType = valueSignInType,
                Issuer = AadB2CConfiguration.TenantId,
                IssuerAssignedId = username,

            }
        },
    PasswordPolicies = valuePasswordPolicies,
    PasswordProfile = new PasswordProfile()
    {
        Password = password,
        ForceChangePasswordNextSignIn = false,
    }
    ,AdditionalData = extensionInstance
};

GraphClient Method

public static Microsoft.Graph.GraphServiceClient GraphClient
        {
            get
            {
                var app = ConfidentialClientApplicationBuilder.Create(AadB2CConfiguration.ClientId)
                    .WithClientSecret(AadB2CConfiguration.ClientSecret)
                    .WithAuthority(AadB2CConfiguration.AadB2cGraphAuthority)
                    .Build();

                string[] scopes = new string[] { AadB2CConfiguration.GraphScope };
                var token = app.AcquireTokenForClient(scopes).ExecuteAsync().Result;

                Microsoft.Graph.GraphServiceClient graphClient = new Microsoft.Graph.GraphServiceClient(AadB2CConfiguration.GraphBaseUrl, new Microsoft.Graph.DelegateAuthenticationProvider(async (requestMessage) =>
                {
                    requestMessage.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("bearer", token.AccessToken);
                }));

                return graphClient;
            }

The User will then be created via the GraphClient

User result = await GraphClient.Users.Request().AddAsync(newUser);
return ResponseMessage(result);

How can I find out which property is not present?

CodePudding user response：

Check that AadB2CConfiguration.ExtensionsID is correct, it should be the application (client) ID of the application the GUID extension property was created against with the - removed.

If it's wrong, and so Graph can't find the application, then you'll get the error Resource '' does not exist or one of its queried reference-property objects are not present.