Jeg må skrive inn fødselsdatoen min før søknaden blir godkjent.

Må means must, have to, or need to, depending on context.

In this sentence, it expresses necessity: the speaker is required to enter their birth date before the application can be approved.

It is the present tense of å måtte.

Examples:

• Jeg må gå nå. = I have to go now.
• Du må fylle ut skjemaet. = You must fill out the form.

In many everyday situations, English have to is often the most natural translation.

Because må is a modal verb, and modal verbs in Norwegian are followed by a bare infinitive.

So you say:

• Jeg må skrive
• Du kan komme
• Vi skal dra

Not:

• Jeg må å skrive

This is similar to English:

• I must write not
• I must to write

Skrive inn is a verb + particle combination that means enter, fill in, or write in information.

So here it means entering the birth date into a form or system.

Compare:

• skrive = to write
• skrive inn = to write in / enter
• skrive ned = write down
• skrive ut = print out

So skrive inn fødselsdatoen min is not just writing in a general sense. It specifically means supplying that information in the proper place.

Both are possible, but fødselsdatoen min is the more neutral and common everyday pattern in Norwegian.

Norwegian often prefers:

• nouns + definite ending + possessive

So:

• fødselsdatoen min = my birth date
• boka mi = my book
• huset ditt = your house

The alternative min fødselsdato is also correct, but it can sound a bit more formal, literary, or emphatic, depending on context.

Very roughly:

• fødselsdatoen min = the usual everyday way
• min fødselsdato = my birth date, with a little extra emphasis on my

Because when the possessive comes after the noun, the noun usually takes the definite form.

So:

• fødselsdato = birth date
• fødselsdatoen = the birth date
• fødselsdatoen min = my birth date

This is a very common Norwegian pattern:

• bil → bilen min
• venn → vennen min
• bok → boka mi or boken min

So the -en ending is not random. It marks the noun as definite.

It is a compound noun:

• fødsel = birth
• dato = date

Together they form fødselsdato = birth date

The -s- in the middle is a common linking element in Norwegian compounds. It does not usually have a separate meaning by itself here; it just helps connect the parts.

This kind of compounding is extremely common in Norwegian.

Other examples:

• arbeidsdag = workday
• barnebok = children’s book
• søknadsskjema = application form

Søknaden is the definite singular form of søknad.

• søknad = application
• søknaden = the application

In this sentence, it refers to a specific application, not just applications in general. That is why the definite form is used.

The ending -en shows that søknad is a common-gender noun in the singular definite form.

It is a passive construction.

It is built from:

• blir = present tense of bli
• godkjent = past participle of godkjenne, meaning approve

So:

• godkjenne = to approve
• godkjent = approved
• blir godkjent = is approved / gets approved

This is a very common way to form the passive in Norwegian:

• Døren blir åpnet. = The door is opened / gets opened.
• Søknaden blir godkjent. = The application is approved / gets approved.

The difference is mainly between process/event and state/result.

• blir godkjent = gets approved / is being approved / comes to be approved
• er godkjent = is approved, already in an approved state

In this sentence, the idea is that approval happens after the birth date is entered. So blir godkjent fits well because it refers to the approval event.

Compare:

• Søknaden er godkjent. = The application is approved already.
• Søknaden blir godkjent i morgen. = The application will be approved tomorrow.

Because før introduces a subordinate clause.

In Norwegian, subordinate clauses do not follow the same main-clause word order rules that often cause inversion. So the normal order here is:

• søknaden = subject
• blir = finite verb
• godkjent = participle

That gives:

• før søknaden blir godkjent

This is the expected structure after conjunctions such as:

• før = before
• at = that
• når = when
• fordi = because
• hvis = if

Because Norwegian often uses the present tense for future meaning when the context makes the time clear.

That is especially common after time words and conjunctions like:

• før
• når
• etter at

So før søknaden blir godkjent means before the application gets approved / is approved, even though that approval is in the future relative to the first action.

English often does something similar:

• I need to do this before the application is approved not usually
• before the application will be approved

So this is very natural in Norwegian.

Yes, you could say Jeg må skrive inn min fødselsdato før søknaden blir godkjent, and it would be grammatically correct.

However, many Norwegian speakers would find fødselsdatoen min more natural in ordinary speech.

So the difference is not correctness, but style and emphasis:

• fødselsdatoen min = more everyday and typical
• min fødselsdato = possible, but slightly more formal or emphatic

No. Depending on context, Norwegian might also use verbs like:

• taste inn = type in
• fylle inn = fill in
• oppgi = provide/state

But skrive inn is perfectly natural if the idea is entering information into a form or system.

For example:

• Jeg må taste inn fødselsdatoen min suggests typing it
• Jeg må fylle inn fødselsdatoen min suggests filling in a form field
• Jeg må oppgi fødselsdatoen min focuses on providing the information

So skrive inn is one natural choice, not the only possible one.