Asegúrate de llevar toda la documentación, porque ese requisito cambia según el trámite.

Because asegúrate is the affirmative tú command of the reflexive verb asegurarse.

• asegurar = to assure / to insure / to secure
• asegurarse de = to make sure of

So here the speaker is telling someone directly: make sure.

How it is formed:

• asegura = affirmative tú command of asegurar
• add the reflexive pronoun te
• in affirmative commands, the pronoun attaches to the end: asegúrate

The accent mark is added to keep the correct stress.

Because the verb pattern is asegurarse de + noun / infinitive.

So:

• asegurarse de algo = to make sure of something
• asegurarse de hacer algo = to make sure to do something

In this sentence:

• Asegúrate de llevar... = Make sure to bring/carry...

This de is required by the verb structure, not optional.

Llevar literally often means to carry, to take, or to bring with you, depending on context.

In this sentence, llevar toda la documentación means something like:

• bring all the documentation with you
• take all the documentation along

Spanish often uses llevar where English might naturally say bring in situations involving having something with you when you go somewhere.

Documentación is a collective/uncountable noun here. It refers to the full set of paperwork or documents needed.

So:

• toda la documentación = all the documentation / all the paperwork
• todos los documentos = all the documents

Both could work in some contexts, but documentación sounds more natural in administrative or official contexts, especially in Spain.

Also notice:

• documentación is feminine singular
• so it takes toda la, not todo el or todos los

Because todo goes before the article and noun in this structure:

• todo el tiempo = all the time
• toda la semana = the whole week / all week
• toda la documentación = all the documentation

This is the normal word order in Spanish:

todo/toda/todos/todas + article + noun

And the form changes to match the noun:

• toda because documentación is feminine singular

Because porque is the conjunction meaning because.

Compare:

• porque = because
• por qué = why
• porqué = the reason (a noun)
• por que = less common combination in special structures

In this sentence, the speaker is giving a reason:

• ..., porque ese requisito cambia...
• ..., because that requirement changes...

So porque is the correct form.

Ese requisito means that requirement.

• requisito = requirement
• ese = that

Spanish demonstratives show distance or reference:

• este = this
• ese = that
• aquel = that over there / that one farther away

Here, ese requisito refers to a requirement already understood from context, probably one the listener is dealing with. It is not necessarily about physical distance; it can just point to something previously mentioned or known.

Here según means depending on or according to.

So:

• cambia según el trámite = it changes depending on the procedure

This is a very common use of según.

Other examples:

• Según la hora, hay más tráfico. = Depending on the time, there is more traffic.
• Según el médico, todo va bien. = According to the doctor, everything is fine.

In your sentence, según expresses variation based on the type of administrative process.

Trámite is a very common word in Spain for an administrative procedure, bureaucratic process, or official application step.

It can refer to things like:

• applying for a document
• filing paperwork
• registering something officially
• completing a government-related process

So while procedure is a good translation, trámite often has a specifically official/bureaucratic feel.

Examples:

• hacer un trámite = to complete a procedure
• trámites administrativos = administrative procedures

Because the sentence is stating a general fact:

• ese requisito cambia según el trámite = that requirement changes depending on the procedure

Spanish often uses the present tense for things that are generally true, habitual, or regularly the case.

It does not mean it is changing right this second. It means the requirement varies from one procedure to another.

Because nothing here triggers it.

This sentence contains:

• a command: Asegúrate...
• a reason introduced by porque
• a factual statement: ese requisito cambia según el trámite

The second part is presented as a fact, so the indicative is used:

• cambia

You would not use the subjunctive after porque when giving a real reason like this.

The infinitive is llevar.

After expressions like asegúrate de..., Spanish uses an infinitive to say what action needs to be done:

• Asegúrate de llamar. = Make sure to call.
• Asegúrate de estudiar. = Make sure to study.
• Asegúrate de llevar toda la documentación. = Make sure to bring all the documentation.

So the structure is:

command + de + infinitive

Yes. If you are speaking formally to usted, you would say:

Asegúrese de llevar toda la documentación, porque ese requisito cambia según el trámite.

Changes:

• asegúrate → asegúrese

Everything else stays the same.

This would be common in formal service situations, official instructions, or polite advice.

They show where the stress goes.

• asegúrate is stressed on gú: a-se-GÚ-ra-te
• trámite is stressed on trá: TRÁ-mi-te

In asegúrate, the accent is especially important because adding the pronoun -te to the command changes the word length, so the written accent keeps the original stress.

In trámite, the accent marks stress on the antepenultimate syllable, which Spanish spelling rules require to be written.

Yes. Some natural alternatives are:

• dependiendo del trámite
• según cuál sea el trámite
• en función del trámite (more formal)

For example:

• ...porque ese requisito cambia dependiendo del trámite.
• ...porque ese requisito cambia en función del trámite.

But según el trámite is short, natural, and very common.

Usually, yes.

When documentación means paperwork or required documents as a set, it is normally treated as a singular mass noun:

• la documentación
• mucha documentación
• toda la documentación

If you want to count individual items, Spanish usually switches to documentos:

• tres documentos
• todos los documentos necesarios

So in this sentence, singular documentación is the natural choice.