For reimbursement, get a 报销凭证 at a window or kiosk within 30 days of travel.

The formal receipt is at a window, within 30 days.
If you need proof of a train ticket for expenses, the app alone does not issue the formal receipt:
The formal reimbursement receipt (报销凭证) is issued at a station window or self-service kiosk, within 30 days of travel — not inside the booking app.
Every case shows the diagnosis and the first step - free. The full step-by-step fix for this exact case, the decision tree, and the offline kit are $9.99.
The kit shows the fapiao (发票) route that finance actually accepts, since the e-receipt is often rejected for reimbursement.
How to get a real fapiao, not just the e-receipt, for company claims.
Which tickets qualify for fapiao vs only 报销凭证.
The path as a printable card.
The notice is on the wall. The parcel still has your name on it.
One question, two paths. Your answer picks the road.
When the app says no, the counter can always say yes.
If the window cannot issue the receipt:
Four levels deep — a closed gate is never the end of the trip.

Station staff can usually solve in one minute what the app refuses to.
Most travellers know about three of these before they fly. This one is often not one of them.
Verified against these sources on 2026-09-20.