If the advance payment is included in the payment of 20% of the contract amount of work, the advance payment will be deducted too early, and the purpose of establishing the advance payment is lost.
If the advance is included in the payment for the completion of the 20 per cent contract amount, the deduction of the advance payment will be premature and the purpose of the advance payment will be lost.
If the advance payment is included in the payment for completing 20% of the contract amount, the deduction time of the advance payment will be too early and the purpose of setting up the advance payment will be lost.