FATAL_ERROR|System.TypeException: That operation is only allowed from within an active site. Class.System.Site.createPortalUser

Question

This is my code.But am getting an error i.e

FATAL_ERROR|System.TypeException: That operation is only allowed from within an active site. Class.System.Site.createPortalUser.

Please correct my error

@RestResource(urlMapping='/insertP/*')
global with sharing class portalcreatenew
{
@HttpPost
global static string newportalcreation()
{
    RestRequest req=RestContext.request;
   // req.addParameter('userId',userId);
    RestResponse res=RestContext.response;
   // req.addParameter('userId',userId);

    Blob Body = req.requestBody;
    Wrapperclss reg = portalcreatenew.parse(Body.tostring());
    //system.debug('InputParsed::'+reg.Wrapper2);
   // system.debug('InputRequest::'+Body.tostring());
    Wrapperclss container = (Wrapperclss)System.JSON.deserialize(RestContext.request.requestBody.tostring(),Wrapperclss.class);
    User thisUser = [select Id from User where Id = :UserInfo.getUserId()];
    ID ProfileId = [Select id from Profile where name = 'Customer Portal Manager Custom'].id;
    Account A1 = new Account(Name = 'Test Acct', OwnerId=thisUser.Id );
    insert A1;
    Contact C1 = new Contact( AccountID = A1.id, firstName = 'TestTest', lastName = 'UserUser',email = 'harish.cherry484@gmail.com');
    insert C1; 
    User newUser = new User();
    newUser.Username = reg.Username;
   // newUser.LastName = C1.lastname;
    newUser.LastName = reg.Lastname;
    newUser.Email = reg.Email;
    //newUser.password = reg.password;
    newUser.Alias = reg.Alias;
    newUser.CommunityNickName = reg.CommunityNickName;
    newUser.TimeZoneSidKey = reg.TimeZoneSidKey;
    newUser.LocaleSidKey = reg.LocaleSidKey;
    newUser.EmailEncodingKey = reg.EmailEncodingKey;
    newUser.ProfileId = ProfileId;
    newUser.LanguageLocaleKey = reg.LanguageLocaleKey;
    newUser.ContactId = C1.id;
    string userId = Site.createPortalUser(newUser, A1.id, 'harish.8392', true);
    insert newUser;
    return 'User Created! Id Is: ' + newUser.Id;
    }
    public static Wrapperclss parse(string reg)
    {
        return(Wrapperclss)System.json.deserialize(reg,Wrapperclss.class);
    }
    global class Wrapperclss
    {
            public String Username{get;set;}
            public String LastName{get;set;}
            public String Email{get;set;} 
            public String password{get; set {password = value == null ? value : value.trim(); } }
            public String confirmPassword {get; set { confirmPassword = value == null ? value : value.trim(); } }
            public String Alias{get;set;}
            public String CommunityNickName{get;set;}
            public String TimeZoneSidKey{get;set;}
            public String LocaleSidKey{get;set;}
            public String EmailEncodingKey{get;set;}
            public String ProfileId{get;set;}
            public String LanguageLocaleKey{get;set;}
            public String ContactId{get;set;}
        }  
  }

Answer 1

When you tried to execute site methods as a Internal user then community will throw exception.

Make the community as active. open the community URL in browser and test it from community site page. It will not throw error.

Site.createPortalUser() is only work from community site pages.

Follow the Steps to Activate the Community:

Setup-->All Communities--> click on Workspaces for respective community --> Administraton --> Setting --> Click on Active Community button.

You can access it by hitting community URL and try registration functionality.