DeleteQuoteLineItemCTLRTest.myUnitTest -- System.DmlException: Insert failed. First exception on row 0; 

first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, The Quote Account and the Opportunity Account must be insync: [Account__c]

    Stack trace: Class.DeleteQuoteLineItemCTLRTest.myUnitTest: line 58, column 1



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@isTest
private class DeleteQuoteLineItemCTLRTest {

    static testMethod void myUnitTest() {
        Organization__c organizationObj = (Organization__c)TestDataHelper.createSObject('Organization__c');
        insert organizationObj;
        TestDataHelper.createSalesRegionUser(organizationObj.id);
        
        Account accObj = (Account) TestDataHelper.createSObject('Account');
        accObj.BillingCountry = 'Germany';
        insert accObj;
        
        AccountContactRole accountContactRole=(AccountContactRole)TestDataHelper.createSObject('AccountContactRole',true,1);
        Opportunity oppty=(Opportunity)TestDataHelper.createSObject('Opportunity');
        oppty.accountId=AccountContactRole.AccountId;
        accountContactRole.IsPrimary=true;
        insert accountContactRole;
        insert oppty;
        
        system.assertequals(oppty.accountid,accountContactRole.AccountId);
        Quote quote = (Quote)TestDataHelper.createSObject('Quote');
        quote.opportunityId=oppty.id;
        quote.Sold_To__c = accobj.Id;
        //quote.Account__c= accObj.Id;
        //quote.Account__c = accObj.Id;
        insert quote;
        
        
        system.assertequals(quote.OpportunityId,oppty.id);
        list<QuoteFieldIds__c> quoteFields=TestDataHelper.getQuoteFieldIds();
        insert quoteFields;
        
        system.Test.setCurrentPage(Page.AppendSaveURLQLI);
        
         Test.startTest();
            // Run as System Administrator
            //system.runAs(systemAdministrator){ 
                //runDeleteQuoteCTLR(quote);
                ApexPages.currentPage().getParameters().put('newid',quote.id);
                ApexPages.currentPage().getParameters().put('oppid',oppty.id);
                runDeleteQuoteCTLR(quote);
                system.assertequals(ApexPages.currentPage().getParameters().get('newid'),quote.id);
                system.assertequals(ApexPages.currentPage().getParameters().get('oppid'),oppty.id);
                //ApexPages.currentPage().getParameters().put('save_new','Https://login.salesforce.com?id=test');
                //runDeleteQuoteCTLR(quote);
            //}
            
        Test.stopTest();
    }
    static void runDeleteQuoteCTLR(Quote quote){
        ApexPages.Standardcontroller controller=new ApexPages.Standardcontroller(quote);
        DeleteQuoteLineItemCTLR deleteQLICTLR=new DeleteQuoteLineItemCTLR(controller);
        deleteQLICTLR.deleteQLI();
        deleteQLICTLR.appendSaveURL();
    }
}