public List<String> getValidationErrors(){
		List<String> errors = new ArrayList<String>();
		if(checkAmount == null || checkAmount.length() == 0)errors.add("Amount is not entered.");
		if(errors.size() != 0) return errors;	

		if(!checkAmount.matches("\\d*")) errors.add("The amount requested should be a positive number.");
		if(errors.size() != 0) return errors;
		if(Long.valueOf(checkAmount) > Global.BALANCE_UPPER) errors.add("The amount requested should be less than $90,000,000,000");
		if(Long.valueOf(checkAmount) <= 0) errors.add("The amount requested should be more than $0.");
		return errors;
	}