Hi Suneel,

I am creating the 'Business' object from the relatedlist of account by clicking the 'NEW' button. The whole controller code is as below:

public class myBusinessController {
    Account acc = new Account();
    
    public Id accountIdNew{get;set;}
    public Business__c business{get;set;}
    public ID AccountId= null;
    public List<business__c> bus {get; set;}

    public String id1; 
    public String id2;  
    public String standardizedBusinessProcess;
    public String desiredBusinessOutcomes;
    public String applicationSupport;
    public String stakeholdersBuyins;
    public String currentlyOutsouce;
    public String systems;
    public String cloudBasedPlatforms;
    public String ITStrategy;
    public String investedinCloud;
    public String satisfiedWithCloud;
    public String ITApplicationsSharedBetweenLOB;
    public String users;
    public String risk;
    public String geographicalFootprint;
    public String disparityinITBudget;
    public String multiGeographyEngagement;
    public String nonFunctionalRequirement;
    public String specificNFR;
    public String seasonalUserLoad;
    public String changeManagementProgram;
    public String MyAccount;    
       
    public myBusinessController(ApexPages.StandardController controller){
    this.acc = (Account)controller.getRecord(); 
   // id billAccountId = controller.getId();
    accountIdNew = controller.getId();

    
   System.debug('ACCOUNT ID Id ID'+ accountIdNew); 
   // System.debug('ACCOUNT ID'+ billAccountId); 
    System.debug('WORLD OF CONTROLLER'+ this.acc);
   // bus.add(new business__c(Account__c = Account.id);

    System.debug('@@@@@@@@'+ this.MyAccount);
     /*Id id = ApexPages.currentPage().getParameters().get('id');
        business=(id == null) ? new Business__c() : 
            [SELECT Name FROM Business__c WHERE Id = :id];
        Id id=controller.getId();
        system.debug('=======id is========='+id);*/
        String hostVal  = ApexPages.currentPage().getHeaders().get('Host');
            system.debug('=======Host is========='+hostVal);
        String urlVal = Apexpages.currentPage().getUrl();
            system.debug('=======URL is========='+urlVal );
        String URLL = 'https://' + hostVal+ urlVal;
            system.debug('=======entire URL is========='+URLL);
         id1=urlVal.substring(75,91);
         System.debug('+++++15 digit id+++++'+id1);
         //AccountId=id1;
         system.debug('=======newAccountId is========='+AccountId); 
         
         //List<Account> i=[Select id from Account where id=:id1 limit 1];
         //id1 = '0019000000ld9fBAAQ';            
         //system.debug('=======18 digit AccountId is========='+i);    
         //this.AccountId=Id.valueOf(id1);
         //system.debug('=======AccountId is========='+AccountId); 
       //   public Integer myint{
        //  get{
         //    if(acc == null)
           // acc = [SELECT ID FROM Account where ID = :id1];
      //    }
        
    }
    
    public List<SelectOption> getvalue(){
        List<SelectOption> options= new List<SelectOption>();
            options.add(new SelectOption('Yes','Yes'));
            options.add(new SelectOption('Partial','Partial'));
            options.add(new SelectOption('No','No'));
        return options;
    }
    public List<SelectOption> getvalue1(){
        List<SelectOption> options= new List<SelectOption>();
            options.add(new SelectOption('Increase revenue','Increase revenue'));
            options.add(new SelectOption('Decrease costs (increase productivity)','Decrease costs (increase productivity)'));
            options.add(new SelectOption('Increase margins','Increase margins'));
            options.add(new SelectOption('Other','Other'));
        return options;
    }
    public List<SelectOption> getvalue2(){
        List<SelectOption> options= new List<SelectOption>();
            options.add(new SelectOption('Yes','Yes'));
            options.add(new SelectOption('No','No'));
        return options;
    }
    
    public List<SelectOption> getvalue3(){
        List<SelectOption> options= new List<SelectOption>();
            options.add(new SelectOption('Yes, cloud based','Yes, cloud based'));
            options.add(new SelectOption('Yes, traditional','Yes, traditional'));
            options.add(new SelectOption('No','No'));
        return options;
    }
    public List<SelectOption> getvalue4(){
        List<SelectOption> options= new List<SelectOption>();
            options.add(new SelectOption('Low','Low'));
            options.add(new SelectOption('Med','Med'));
            options.add(new SelectOption('High','High'));
            options.add(new SelectOption('None','None'));
        return options;
    }
    public List<SelectOption> getvalue5(){
        List<SelectOption> options= new List<SelectOption>();
            options.add(new SelectOption('Low','Low'));
            options.add(new SelectOption('None','None'));
            options.add(new SelectOption('High','High'));
        return options;
    }
    public List<SelectOption> getvalue6(){
        List<SelectOption> options= new List<SelectOption>();
            options.add(new SelectOption('Low','<500K'));
            options.add(new SelectOption('Medi','500 to 2000K'));
            options.add(new SelectOption('High','>2000K'));
        return options;
    }
    public List<SelectOption> getvalue7(){
        List<SelectOption> options= new List<SelectOption>();
            options.add(new SelectOption('Not at all','Not at all'));
            options.add(new SelectOption('Somewhat','Somewhat'));
            options.add(new SelectOption('Very Satisfied','Very Satisfied'));
        return options;
    }
    public List<SelectOption> getvalue8(){
        List<SelectOption> options= new List<SelectOption>();
            options.add(new SelectOption('Risk Adverse','Risk Adverse'));
            options.add(new SelectOption('Neutral','Neutral'));
            options.add(new SelectOption('Risk Tolerant','Risk Tolerant'));
        return options;
    }
    public List<SelectOption> getvalue9(){
        List<SelectOption> options= new List<SelectOption>();
            options.add(new SelectOption('Yes','Yes'));
            options.add(new SelectOption('No','No'));
        return options;
    }
    public List<SelectOption> getvalue10(){
        List<SelectOption> options= new List<SelectOption>();
            options.add(new SelectOption('Important','Important'));
            options.add(new SelectOption('Not Important','Not Important'));
        return options;
    }
    public String getstandardizedBusinessProcess(){
        return standardizedBusinessProcess;
    }
    public void setstandardizedBusinessProcess(String standardizedBusinessProcess){
        this.standardizedBusinessProcess=standardizedBusinessProcess;
    }
    
    public String getdesiredBusinessOutcomes(){
        return desiredBusinessOutcomes;
    }
    public void setdesiredBusinessOutcomes(String desiredBusinessOutcomes){
        this.desiredBusinessOutcomes=desiredBusinessOutcomes;
    }
    
    public String getapplicationSupport(){
        return applicationSupport;
    }
    public void setapplicationSupport(String applicationSupport){
        this.applicationSupport=applicationSupport;
    }
    
    public String getstakeholdersBuyins(){
        return stakeholdersBuyins;
    }
    public void setstakeholdersBuyins(String stakeholdersBuyins){
        this.stakeholdersBuyins=stakeholdersBuyins;
    }
    
    public String getcurrentlyOutsouce(){
        return currentlyOutsouce;
    }
    public void setcurrentlyOutsouce(String currentlyOutsouce){
        this.currentlyOutsouce=currentlyOutsouce;
    }
    
    public String getsystems(){
        return systems;
    }
    public void setsystems(String systems){
        this.systems=systems;
    }
    
    public String getcloudBasedPlatforms(){
        return cloudBasedPlatforms;
    }
    public void setcloudBasedPlatforms(String cloudBasedPlatforms){
        this.cloudBasedPlatforms=cloudBasedPlatforms;
    }
    
    public String getITStrategy(){
        return ITStrategy;
    }
    public void setITStrategy(String ITStrategy){
        this.ITStrategy=ITStrategy;
    }
    
    public String getinvestedinCloud(){
        return investedinCloud;
    }
    public void setinvestedinCloud(String investedinCloud){
        this.investedinCloud=investedinCloud;
    }
    
    public String getsatisfiedWithCloud(){
        return satisfiedWithCloud;
    }
    public void setsatisfiedWithCloud(String satisfiedWithCloud){
        this.satisfiedWithCloud=satisfiedWithCloud;
    }
    
    public String getITApplicationsSharedBetweenLOB(){
        return ITApplicationsSharedBetweenLOB;
    }
    public void setITApplicationsSharedBetweenLOB(String ITApplicationsSharedBetweenLOB){
        this.ITApplicationsSharedBetweenLOB=ITApplicationsSharedBetweenLOB;
    }
    
    public String getusers(){
        return users;
    }
    public void setusers(String users){
        this.users=users;
    }
    
    public String getrisk(){
        return risk;
    }
    public void setrisk(String risk){
        this.risk=risk;
    }
    
    public String getgeographicalFootprint(){
        return geographicalFootprint;
    }
    public void setgeographicalFootprint(String geographicalFootprint){
        this.geographicalFootprint=geographicalFootprint;
    }
    
    public String getdisparityinITBudget(){
        return disparityinITBudget;
    }
    public void setdisparityinITBudget(String disparityinITBudget){
        this.disparityinITBudget=disparityinITBudget;
    }
    
    public String getmultiGeographyEngagement(){
        return multiGeographyEngagement;
    }
    public void setmultiGeographyEngagement(String multiGeographyEngagement){
        this.multiGeographyEngagement=multiGeographyEngagement;
    }
    
    public String getnonFunctionalRequirement(){
        return nonFunctionalRequirement;
    }
    public void setnonFunctionalRequirement(String nonFunctionalRequirement){
        this.nonFunctionalRequirement=nonFunctionalRequirement;
    }
    
    public String getspecificNFR(){
        return specificNFR;
    }
    public void setspecificNFR(String specificNFR){
        this.specificNFR=specificNFR;
    }
    
    public String getseasonalUserLoad(){
        return seasonalUserLoad;
    }
    public void setseasonalUserLoad(String seasonalUserLoad){
        this.seasonalUserLoad=seasonalUserLoad;
    }
    
     public String getchangeManagementProgram(){
        return changeManagementProgram;
    }
    public void setchangeManagementProgram(String changeManagementProgram){
        this.changeManagementProgram=changeManagementProgram;
    }
    
    public Void saveRecord(){
        Business__c nwbusiness =new Business__c ();
           //
           nwbusiness.Account__c = accountIdNew;
          // nwbusiness.Account__c = '0019000000ld9fB';
            nwbusiness.Business_standardized_business_process__c=standardizedBusinessProcess;
           
         /*   nwbusiness.Business_desired_business_outcomes__c=desiredBusinessOutcomes;
            nwbusiness.Business_application_s_support__c=applicationSupport;
            nwbusiness.Business_stakeholders_buy_ins__c=stakeholdersBuyins;
            nwbusiness.Business_currently_outsouce__c=currentlyOutsouce;
            nwbusiness.Business_systems__c=systems;
            nwbusiness.Business_understanding_of_cloud_based_pl__c=cloudBasedPlatforms;
            nwbusiness.Business_IT_strategy__c=ITStrategy;
            nwbusiness.Business_invested_in_cloud__c=investedinCloud;
            nwbusiness.Business_satisfied_with_Cloud__c=satisfiedWithCloud;
            nwbusiness.Business_IT_applications_shared_between__c=ITApplicationsSharedBetweenLOB;
            nwbusiness.Business_users__c=users;
            nwbusiness.Business_risk__c=risk;
            nwbusiness.Business_geographical_footprint__c=geographicalFootprint;
            nwbusiness.Business_disparity_in_IT_budget__c=disparityinITBudget;
            nwbusiness.Business_multi_geography_engagement__c=multiGeographyEngagement;
            nwbusiness.Business_non_functional_requirement__c=nonFunctionalRequirement;
            nwbusiness.Business_specific_NFR__c=specificNFR;
            nwbusiness.Business_seasonal_user_load__c=seasonalUserLoad;
            nwbusiness.Business_change_management_program__c=changeManagementProgram;
            
        */
        try{
            insert nwbusiness;
        }catch(exception e){
            system.debug('+++++++error is++++++'+e);
        }
        
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}