Attempt to de-reference a null object apex

Hi,
I am getting attempt to de-reference a null object apex error while trying to allocate the record to a particular record type.
Please help me out.
Requirement:
<div>As soon as the Return request record is created, automatically create "Voucher" record from the backend. For example - if Return request is approved for amount 5000, then there should be three Voucher records created automatically from backend (one record with record type 1000, two records with record type 2000)

</div>
public class returnRequestTriggerHandler
{
public void createVouchers(List<return_request__c> reqList)</return_request__c>
{
List<voucher__c> vList = new List<voucher__c>();</voucher__c></voucher__c>
Decimal[] voucherNames=new Decimal[] {2000,1000,500,100,50,10,5,1};
for(Return_Request__c r:reqList){
Decimal price=r.Item_Original_Price__c;
integer n=0;
while(price>0)
{
Voucher__c newVoucher=new Voucher__c();
if(price-voucherNames[n]>=0)
{
newVoucher.Name=String.valueOf(voucherNames[n].format())+' Voucher';
newVoucher.Amount__c=voucherNames[n];
newVoucher.Return_Request__c=r.Id;
if(voucherNames[n]==2000){
newVoucher.RecordTypeId= Schema.SObjectType.Voucher__c.getRecordTypeInfosByName()
.get('X2000').getRecordTypeId();
}
else if(voucherNames[n]==1000){
newVoucher.RecordTypeId= Schema.SObjectType.Voucher__c.getRecordTypeInfosByName()
.get('X1000').getRecordTypeId();
}
else if(voucherNames[n]==500){
newVoucher.RecordTypeId= Schema.SObjectType.Voucher__c.getRecordTypeInfosByName()
.get('X500').getRecordTypeId();
}
else if(voucherNames[n]==100){
newVoucher.RecordTypeId= Schema.SObjectType.Voucher__c.getRecordTypeInfosByName()
.get('X100').getRecordTypeId();
}
else if(voucherNames[n]==50){
newVoucher.RecordTypeId= Schema.SObjectType.Voucher__c.getRecordTypeInfosByName()
.get('X50').getRecordTypeId();
}
else if(voucherNames[n]==10){
newVoucher.RecordTypeId= Schema.SObjectType.Voucher__c.getRecordTypeInfosByName()
.get('X10').getRecordTypeId();
}
else if(voucherNames[n]==5){
newVoucher.RecordTypeId= Schema.SObjectType.Voucher__c.getRecordTypeInfosByName()
.get('X5').getRecordTypeId();
}
else{
newVoucher.RecordTypeId= Schema.SObjectType.Voucher__c.getRecordTypeInfosByName()
.get('X1').getRecordTypeId();
}
vList.add(newVoucher);
price=price-voucherNames[n];
}
else{
n++;
}
}
}
insert vList;
}
}

• This discussion was modified 6 years, 2 months ago by  Pragya.