Salgsdokumentet viser betalingsfristen.

Because -et is the definite ending for a singular neuter noun in Norwegian. It works like the in English.

• et salgsdokument = a sales document
• salgsdokumentet = the sales document

So instead of putting a separate word before the noun, Norwegian often adds the definite article to the end of the noun.

Because frist is a common-gender noun in this sentence, not a neuter noun.

• en betalingsfrist = a payment deadline
• betalingsfristen = the payment deadline

So:

• -en is a common singular definite ending
• -et is a neuter singular definite ending

That is why the two nouns in the sentence have different endings.

They are compound nouns, which are very common in Norwegian.

Salgsdokumentet can be broken down like this:

• salg = sale
• dokument = document
• -et = the

So salgsdokumentet literally means the sales document.

Betalingsfristen can be broken down like this:

• betaling = payment
• frist = deadline / time limit
• -en = the

So betalingsfristen means the payment deadline.

That -s- is a linking sound often used in Norwegian compounds. It does not have a separate meaning by itself here; it just helps connect the parts of the compound.

For example:

• salg
  • dokument → salgsdokument
• betaling
  • frist → betalingsfrist

This is something you often just have to learn word by word, because not every compound uses a linking -s-.

Viser is the present tense of the verb å vise, which means to show.

• å vise = to show
• viser = shows / is showing

So Salgsdokumentet viser betalingsfristen means that the sales document shows the payment deadline.

A useful point: Norwegian verbs do not change according to the subject the way English verbs do very much.

• jeg viser
• du viser
• han viser
• de viser

The form viser stays the same.

In Norwegian, the definite article is usually attached to the end of the noun.

So English says:

• the sales document
• the payment deadline

But Norwegian says:

• salgsdokumentet
• betalingsfristen

This is one of the biggest differences from English noun grammar.

The indefinite forms are:

• et salgsdokument = a sales document
• en betalingsfrist = a payment deadline

So the sentence could be changed from definite to indefinite like this:

• Et salgsdokument viser en betalingsfrist

That would sound more like A sales document shows a payment deadline, which is grammatically possible but less natural in many contexts than the definite version.

This is normal Norwegian main-clause word order:

subject + verb + object

• Salgsdokumentet = subject
• viser = verb
• betalingsfristen = object

So it follows the same basic pattern as English:

• The sales document shows the payment deadline

This sentence is straightforward and does not involve any special inversion.

Yes. Å vise can mean things like:

• show
• display
• indicate

In this sentence, the exact English translation depends on context. If this is about paperwork or billing, shows or indicates may both fit well.

So Salgsdokumentet viser betalingsfristen could naturally be understood as:

• The sales document shows the payment deadline.
• The sales document indicates the payment deadline.

Norwegian often prefers compound nouns where English might use a noun phrase.

So instead of building a phrase like document for sale/sales, Norwegian commonly combines the words into one compound:

• salgsdokument

This is very typical of Norwegian and other Germanic languages. Learners often need to get used to seeing a lot of meaning packed into one long noun.

A rough guide for an English speaker:

• salgsdokumentet: something like sahlgs-doh-koo-men-teh
• betalingsfristen: something like beh-TAH-lings-fris-ten

A few helpful points:

• Norwegian r is usually different from English r
• unstressed endings such as -et and -en are usually lighter and less emphasized
• in compounds, one part often gets the main stress, but exact stress can vary by dialect and word pattern

If you are learning pronunciation, it is best to listen to native audio, because spelling alone does not show everything.

In Bokmål, many nouns can be either masculine or feminine depending on style and preference. Frist is often treated as a common-gender noun with en in standard written Bokmål:

• en frist
• fristen

Some speakers and writing styles may allow feminine patterns for certain nouns, but en frist / fristen is the form you are most likely to meet and use safely.