Unable to exit intraday orders before 3:15 PM orders got rejected and auto square off happened. Please explain the reason

Hi Upstox Team,

The following intraday stock orders got rejected which are placed before 3:15 PM (2026-01-01 15:13:05)

260101000402911
260101000402901
260101000402871
260101000402881

Status_message: The Intraday Order window for the segment is currently closed for the day.Please place a delivery order.

Unable to exit Intraday orders before 3:15 PM orders got rejected and auto square off happened. Please explain the reason.

What is the time to exit for Intraday stock positions?