Under forutsetning av at attesteringen er ferdig, kommer godkjenningen.

It means on the condition that, provided that, or assuming that.

This is a fairly formal expression, especially in administrative, legal, or workplace language. In everyday speech, Norwegians would often choose something simpler, such as:

• hvis = if
• forutsatt at = provided that
• dersom = if (a bit formal)

So this sentence sounds quite official or procedural.

This is just how the fixed expression is built.

• forutsetning = condition / prerequisite / assumption
• av connects it to what the condition consists of
• at introduces the clause

So:

• under forutsetning av at attesteringen er ferdig

literally works like:

• under the condition of that the attestation is finished

That literal English version sounds awkward, but in Norwegian this structure is normal in formal language.

A learner may want to simplify it mentally to:

• provided that attesteringen er ferdig

This is because of the V2 rule in Norwegian: the finite verb usually comes in the second position in main clauses.

Here, the sentence begins with a fronted condition:

• Under forutsetning av at attesteringen er ferdig

Since that whole phrase takes the first position, the verb must come next:

• kommer

And then the subject follows:

• godkjenningen

So the structure is:

• [Fronted phrase] + [verb] + [subject]

That is why you get:

• Under forutsetning av at attesteringen er ferdig, kommer godkjenningen.

and not:

• Under forutsetning av at attesteringen er ferdig, godkjenningen kommer.

Yes, that is grammatically possible.

If you start with the subject:

• Godkjenningen kommer under forutsetning av at attesteringen er ferdig.

then normal word order is:

• subject + verb + rest

The difference is mostly about focus:

• Under forutsetning av at ... , kommer godkjenningen.
  This puts the condition first and emphasizes it.
• Godkjenningen kommer under forutsetning av at ...
  This starts by emphasizing the approval.

The original version sounds especially natural in formal written language.

Both are definite singular nouns.

• attestering = attestation / certification / verification
• attesteringen = the attestation / the verification
• godkjenning = approval
• godkjenningen = the approval

The ending -en marks the definite singular for many masculine and feminine nouns in Bokmål.

These are also examples of nouns made from verbs:

• å attestere → attestering
• å godkjenne → godkjenning

This kind of noun formation is very common in formal Norwegian.

Ferdig means finished, ready, or completed, depending on context.

So:

• attesteringen er ferdig = the attestation is finished / completed

This is very natural Norwegian. In many cases, Norwegian uses være ferdig where English might prefer:

• is complete
• has been completed
• is finished

In formal English, is complete may sound more natural, but in Norwegian er ferdig is perfectly standard.

Because attesteringen is a singular common-gender noun, and predicate adjectives after er usually take the basic form in that case.

• attestering is common gender
• definite singular: attesteringen
• therefore: er ferdig

You would see -t with many neuter singular nouns:

• arbeidet er ferdigt is actually old-fashioned or Danish-looking; in modern Bokmål you would normally say arbeidet er ferdig

So in practice, ferdig is the normal form here.

Grammatically, kommer is present tense, but it often refers to a future result in context.

So the meaning is something like:

• the approval comes / will come

Norwegian often uses the present tense for future events when the situation is clear from context. English does this too sometimes, but Norwegian does it very naturally and frequently.

So even though the verb form is present, the sentence can easily mean:

• the approval will follow
• the approval will come through

The comma is natural here because the sentence begins with a long introductory condition.

• Under forutsetning av at attesteringen er ferdig, kommer godkjenningen.

The comma helps readability and separates the fronted condition from the main clause.

In Norwegian, comma use is not always identical to English comma use, but in a sentence like this, especially in formal writing, the comma is very normal.

It is definitely formal, and it sounds like something from administration, finance, HR, or official process documentation.

A more everyday version might be:

• Hvis attesteringen er ferdig, kommer godkjenningen.
• Når attesteringen er ferdig, kommer godkjenningen.

But those are not exactly identical in meaning:

• hvis = if
• når = when
• under forutsetning av at = provided that / on condition that

So the original has a more careful, procedural tone.

They are two different steps in a process.

In many administrative or financial contexts:

• attestering means checking, confirming, or certifying that something is correct
• godkjenning means the final approval

So the sentence suggests a sequence like this:

1. the attestation/verification must be completed
2. then the approval comes

The exact meanings can vary by workplace or system, but the basic idea is that attestering is an earlier control step, while godkjenning is the approval step after that.

No, not in standard Norwegian here.

You need:

• under forutsetning av at attesteringen er ferdig

Without at, the sentence would sound wrong.

The word at introduces the clause:

• attesteringen er ferdig

This is very common after expressions that lead into a full clause.

Yes, absolutely. That would be a very natural alternative:

• Forutsatt at attesteringen er ferdig, kommer godkjenningen.

This has almost the same meaning, but it is a little more compact and often sounds smoother.

Both are formal, but forutsatt at is often the more common choice in modern written Norwegian.