budget_update.cs

//in public void Update()
//change
if (updateResult.Errors) { throw new CouldNotUploadBudget(); }
//to
if (updateResult.Errors) { throw new CouldNotUploadBudget( this, updateResult); }

//change
public class CouldNotUploadBudget : System.Exception { }
//to
public class CouldNotUploadBudget : System.Exception { 
        public BudgetUpdate budgetUpdate;
        public BudgetUpdateResult updateResult;
        
        public CouldNotUploadBudget(BudgetUpdate budgetUpdate, BudgetUpdateResult updateResult){
             this.budgetUpdate=budgetUpdate;
             this.updateResult=updateResult;
        }
        
        public string errors(){
            string errors = "";
            foreach (WS.UpdateElementResult detail in this.updateResult.Details){
                errors = errors + detail.Message +". ";
            }
            return errors;
        }
    }