Engangskoden står i bestillingsbekreftelsen.

It is a compound noun:

• engangs- = one-time or single-use
• kode = code

So engangskode means one-time code.

In the sentence, it appears as engangskoden, which is the definite form: the one-time code.

Because Norwegian usually puts the definite article at the end of the noun instead of using a separate word like English the.

For example:

• en kode = a code
• koden = the code

The same happens with compounds:

• en engangskode = a one-time code
• engangskoden = the one-time code

So the meaning of the is built into engangskoden.

Yes, står literally means stands, but Norwegian often uses stå in places where English would use be, appear, or be written.

Here, Engangskoden står i bestillingsbekreftelsen means something like:

• The one-time code is in the order confirmation
• The one-time code appears in the order confirmation
• The one-time code is written in the order confirmation

This is very natural Norwegian. It suggests that the code is written there as information.

You sometimes could, but står is more idiomatic here.

Compare:

• Engangskoden står i bestillingsbekreftelsen = the code is written/listed there
• Engangskoden er i bestillingsbekreftelsen = the code is in the order confirmation

The version with er is understandable, but står sounds more natural when talking about text or information appearing in a document, email, message, or confirmation.

Because Norwegian normally writes compound nouns as one word.

This one can be broken down like this:

• bestilling = order or booking
• bekreftelse = confirmation

So:

• bestillingsbekreftelse = order confirmation

English usually writes these as separate words, but Norwegian usually joins them into one word.

The -s- is a linking sound used in many Norwegian compounds.

So this is:

• bestilling + s + bekreftelse

That -s- does not mean possession here. It is not like English ’s. It is just a common way of connecting the first part of a compound to the second part.

This linking -s- is very common in Norwegian, but it is not always fully predictable, so learners usually get used to it by seeing many examples.

Here i is natural because it refers to information contained in the confirmation.

Norwegian often uses i for something found in:

• a document
• an email
• a message
• a text

So står i bestillingsbekreftelsen means the information is contained in that confirmation.

Prepositions do not always match English exactly, so this is something you often have to learn as a set phrase.

Because the sentence is talking about specific things:

• the one-time code
• the order confirmation

This is very natural in instructions, customer messages, and system text, where both things are already understood from the situation.

So the sentence is not talking about just any code or any confirmation. It means the specific code connected to the specific order confirmation.

The sentence follows normal main-clause word order:

• Engangskoden = subject
• står = verb
• i bestillingsbekreftelsen = prepositional phrase

So it is basically:

Subject + verb + place/location

A natural variation would be:

I bestillingsbekreftelsen står engangskoden.

That still means the same thing, but now the location is emphasized first. Norwegian keeps the verb in second position in main clauses, which is a very important pattern.