So I’m planning my route and for some trains in Spain and Portugal it’s coming up with n/a for seat reservations. What does this mean?

So I’m planning my route and for some trains in Spain and Portugal it’s coming up with n/a for seat reservations. What does this mean?
Best answer by rvdborgt
That Interrail can't tell you the price. They can't sell the reservations for Spain (or Portugal) anyway. By the way, there are also a few reservation-free trains Segovia - Madrid, from the “Segovia” station in the city. Segovia Guiomar is 5 km from the city and you need a bus to get there.
Be warned though that the rail planner app is not reliable enough to plan: it is only updated about once per month. www.raileurope.com is more up to date for Spain.
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