Hai All,

When i am converting a lead Its giving Error

Error: ConvertLead Failed: First exception on row 0; First error: UNAVAILABLE_RECORDTYPE_EXCEPTION,unable to find defaultnrecord type[]

Below is the Class code On convert lead

// This class is meant to hold all the code which will be reusable and common processes. Some webservice methods we can write here also.

global class Lead_Manager
{
    // Responsible for lead conversion from standard page layout.
    // Below webservice method is being called on the click event of the custom convert button on the standard lead page layout.
    WebService static String convertLeadByConvertCustomeButton(String leadId)
    {
        try
        {
            Lead led = [Select id,Name,Status,LeadSource ,IsConverted ,(Select id,ContentType,Name,LastModifiedDate from Attachments) from Lead where id = :leadId];
            if(led.Attachments.size()==0)
                return 'Please upload documents before converting the lead.';
            if(led.Status=='Approved')
            {

             // Here it is throwing Error
                Database.LeadConvert lc = new database.LeadConvert();
                lc.setLeadId(leadId);
                LeadStatus convertStatus = [SELECT Id, MasterLabel FROM LeadStatus WHERE IsConverted=true LIMIT 1];
                lc.setConvertedStatus(convertStatus.MasterLabel);
                lc.setDoNotCreateOpportunity(true);
                Database.LeadConvertResult lcr = Database.convertLead(lc);
                //ApexPages.addMessage(new ApexPages.message(ApexPages.severity.confirm,'Lead has been converted successfully.'));
                led = [Select id,Name,Status,LeadSource ,IsConverted ,ConvertedAccountId,ConvertedContactId from Lead where id = :leadId];
                /* List<Contact> contactList = [Select id from Contact where id=:led.ConvertedContactId];  
                if(contactList.size()>0)
                    delete contactList; */
                return String.ValueOf(led.ConvertedAccountId);
            }
            else
                return 'CSR has not approved the lead so it can not be converted.';
            
        }
        catch(System.Exception e)
        {
            return e.getMessage();
        }
    }
 
    //Lead conversion custom method. This method will take an instance of Lead object
    //and will convert it without creating opportunities and returned the converted lead to its caller.
    // Responsible for lead conversion from visual force.
    public static Lead convertLead(Lead lead)
    {
        Database.LeadConvert lc = new database.LeadConvert();
        lc.setLeadId(lead.Id);
        LeadStatus convertStatus = [SELECT Id, MasterLabel FROM LeadStatus WHERE IsConverted=true LIMIT 1];
        lc.setConvertedStatus(convertStatus.MasterLabel);
        lc.setDoNotCreateOpportunity(true);
        
        Database.LeadConvertResult lcr = Database.convertLead(lc);
        Lead led = [Select id,Status,LeadSource ,ConvertedAccountId,RecordType.Name,Name,OwnerId,CreatedById,FirstName,LastName,Street,City,State,PostalCode,Email,phone,Last_4_digits_SSN__c,Date_of_Birth__c,IsConverted,
                            Enrollment_Id__c,EBT_Number__c,EBT_Holder__c,Number_of_Persons_or_Household__c,Monthly_Income__c,Yearly_Income__c
                            from Lead
                            where id = :lead.id];
       return led;
    }
 
 
    @RemoteAction
    global static String checkLeadApprovalStatusByCSR(String leadId)
    {
        Lead lead = [Select id,Status from Lead where id = :leadId];
        if(lead.Status == 'Approved')
            return '1';
        else
            return '0';
    }
 
}