Refusjonskravet gjelder setereservasjonen i togvognen.

Because Norwegian uses compound nouns very freely.

• refusjonskravet = refusjon
  • krav
    • -et
• setereservasjonen = sete
  • reservasjon
    • -en
• togvognen = tog
  • vogn
    • -en

Where English often writes two nouns separately, like seat reservation or train carriage, Norwegian usually joins them into one word.

In Norwegian, the definite article is often attached to the end of the noun instead of being a separate word.

So:

• kravet = the claim
• setereservasjonen = the seat reservation
• togvognen = the train carriage

This is one of the biggest differences from English. Instead of saying the refund claim, Norwegian says refusjonskravet.

It is the subject of the sentence.

Breakdown:

• refusjon = refund, reimbursement
• krav = claim, demand
• refusjonskrav = refund claim
• refusjonskravet = the refund claim

So grammatically, the sentence starts with the refund claim, and then tells you what it concerns.

That depends on grammatical gender and noun class.

• et krav → kravet
• en reservasjon → reservasjonen
• en vogn → vognen

A useful rule for compounds: the last part decides the gender.

So:

• refusjonskrav is neuter because krav is neuter
• setereservasjon is masculine because reservasjon is masculine
• togvogn is masculine because vogn is masculine

Here, gjelder means something like:

• concerns
• applies to
• relates to

So Refusjonskravet gjelder setereservasjonen ... means that the refund claim is about that seat reservation.

Gjelder is the present tense of å gjelde.

This is normal Norwegian main-clause word order:

• subject
  • verb
    • the rest

So:

• Refusjonskravet = subject
• gjelder = verb
• setereservasjonen i togvognen = what it concerns

Norwegian main clauses follow the verb-second rule, but when the subject comes first, it looks very similar to English.

Because i means in/inside, and a seat reservation is located in a particular carriage.

• i togvognen = in the train carriage

This is different from expressions like på toget (on the train), which describe being aboard the train in a more general way.

So:

• på toget = on the train
• i togvognen = in the train car/carriage

Togvognen literally means the train carriage or the train car.

Depending on the variety of English:

• British English: carriage or coach
• American English: train car

So the sentence is referring to a specific carriage/car within the train.

That s is a linking sound used in many Norwegian compounds.

• refusjon
  • krav → refusjonskrav

It is not a possessive 's like in English. It is just part of how many compounds are formed. Not every compound uses it, so it is something learners often have to get used to word by word.

Adding sete- makes the meaning more specific.

• reservasjon = reservation
• setereservasjon = seat reservation

Without sete-, reservasjonen could refer to many kinds of reservations. With sete-, it clearly refers to a reserved seat.

Yes, sete by itself is neuter:

• et sete
• setet

But inside a compound, the gender of the whole word is decided by the last element, not the first one.

So even though sete is neuter, setereservasjon takes the gender of reservasjon, which is why the definite form is setereservasjonen.

Yes. That is a very close literal translation.

Depending on context, gjelder can be translated as:

• concerns
• applies to
• relates to
• is about

So several English versions are possible, even though the Norwegian sentence stays the same.