error in wsdl file, unable to generate apex code

global class SoapDemo1
{
   webservice static List<Account> CreateAccount(string accName)
   {
       List<Account> accList=new List<Account>();
       for(integer i=1;i<=2;i++)
       {
         Account a=new Account();
         a.Name=accName;
         accList.add(a);
       }
       if (accList.size() > 0)
       {
          Database.Insert(accList);
       }
       return accList;
   } 
}

public class InvokeHDFC
{
    public String securityToken { get; set; }
    public String password { get; set; }
    
    public String username { get; set; }
    public String AccountName { get; set; }
    public List<Account> acList{get;set;}
    public PageReference CallHDFC()
    {
       P2.soap part = new p2.soap();    
       p2.LoginResult lr = part.login(username,password+''+securityToken); 
       Generated_From_WSDL.SoapDemo1 obj1 = new Generated_From_WSDL.SoapDemo1(); 
   
       obj1.sessionHeader = new Generated_From_WSDL.SessionHeader_element();
  
       obj1.sessionHeader.sessionId = lr.SessionId;           
       
       accList=obj1.CreateAccount(AccountName);
                
       return null;
    }
}

I am generating multiple accounts on hdfc side and I will display the ID of each account generated on the flipkart side.