The fourth or last condition is a lawful cause. The meaning of lawful in the condition for the validity of an agreement is not only emphasized on lawful in the sense of religion. However, lawful in this case means lawful in the sense of all rules, both religious rules, moral rules, decency rules, and legal rules. Therefore, the aspect agreed upon must not be something that is not lawful in the sense of the existing rules. For example, it is not allowed to make an agreement to buy and sell drugs, and so on.

Regarding the Anies - Sandi agreement, the fourth condition for the validity of an agreement has been met, because the money agreed upon in the debt agreement is not something that is prohibited by religious law, state law, and is not a reprehensible act.

Since the agreement is legally valid, the discussion will proceed regarding its validity. An agreement generally becomes valid when there is a consensus between both parties and terminates when the agreed-upon performance has been achieved.

However, there are also agreements that conclude upon reaching a specific time. Thus, even if every agreed-upon performance has been completed, it will continue to be valid and must continue to be executed until a specific time limit. For example, an employment agreement, even though the agreed-upon performance has been carried out every day, the agreement continues to be valid until the specified time.

Regarding the Anies-Sandi agreement, based on circulating photos of the agreement letter, it is known that the agreement is valid until the completion of the gubernatorial election.

There are 2 stipulated provisions, the first is that the agreement will continue to be valid until Anies pays IF both fail to win the gubernatorial election. Conversely, the agreement is valid only until the election is over and Anies is not obliged to pay the debt IF both win the political contest in DKI Jakarta.

Given that the existing facts show that both won the political constellation in DKI Jakarta, the agreement is no longer binding because it has been completed.

Thus, the answer to the question "Is the agreement letter valid and still in effect or binding?" The answer is that the agreement is valid and binding, but it has been completed so it is no longer valid and binding.