What does the “validity period” of an order mean and why is this option sometimes not available?
The order validity period is the deadline for the order to be executed by the broker.
If the order validity period is not indicated, the broker shall execute this order till the end of the current trading session.
If the order validity period for operations on international markets is more than 1 trading day, the broker shall not execute this order. The order validity period is not available in orders for placing/raising funds in REPO, for transferring funds from a brokerage account since these types of operations are accepted for execution with the current date and time.