La aprobación incluye la solicitud de vacaciones.

Because aprobación is a feminine noun in Spanish, so it takes la.

A very common clue is the ending -ción, which is usually feminine:

• la aprobación
• la solicitud
• la información
• la decisión

So if you see a noun ending in -ción, it is very often feminine.

Aprobación is a noun, not a verb. It means approval.

So the sentence structure is:

• La aprobación = the approval
• incluye = includes
• la solicitud de vacaciones = the vacation request / leave request

English often uses nouns and verbs in similar-looking ways, so learners sometimes expect something like aprueba, but that would be a verb (approves), not the noun approval.

Because incluye is the conjugated verb needed for the sentence.

The infinitive is incluir = to include.
But here the subject is la aprobación, which is third person singular, so the verb becomes:

• incluir → incluye

Like this:

• La aprobación incluye... = The approval includes...

Compare:

• incluir = to include
• incluye = he/she/it includes

Here it means it includes, because the subject is la aprobación.

Spanish often uses the definite article more often than English.

Here:

• La aprobación = the approval
• la solicitud de vacaciones = the vacation request / the leave request

Even if English might sometimes sound natural without the in certain contexts, Spanish commonly keeps the article.

Also, each noun phrase needs its own article here. You cannot use one la for both nouns because they are part of different parts of the sentence.

Yes, solicitud means request or application, depending on context.

In this sentence, la solicitud de vacaciones is best understood as:

• vacation request
• leave request
• request for time off

In workplace Spanish, solicitud is a very common formal word. It sounds a bit more official than some other options.

Because de is the normal preposition used to link a noun with what it refers to or concerns.

So:

• solicitud de vacaciones = request for vacation / leave

Spanish often uses de where English uses of, for, or even a noun+noun structure.

Other similar examples:

• solicitud de empleo = job application
• cambio de horario = schedule change
• permiso de conducir = driving licence

So de vacaciones is the natural Spanish structure here.

In Spanish, vacaciones is normally used in the plural to mean vacation or holidays.

So even when English says vacation in the singular, Spanish usually says:

• las vacaciones

Examples:

• Me voy de vacaciones. = I’m going on vacation.
• solicitud de vacaciones = vacation request

This is just one of those vocabulary patterns you need to learn as a fixed expression.

You probably could, and it would be understood, but solicitud is usually more natural and formal in administrative or workplace contexts.

Very roughly:

• solicitud = request / application, often formal
• petición = request, but can sound broader or slightly less standard in office paperwork depending on context

For HR, forms, or official processes, solicitud de vacaciones is the more typical phrase.

It means that the approval includes the vacation request, because la aprobación is the subject.

Spanish word order here is straightforward:

• La aprobación = subject
• incluye = verb
• la solicitud de vacaciones = object

So the thing doing the including is the approval.

Not in normal standard Spanish. That would sound unnatural and incomplete.

Spanish generally needs the articles here:

• La aprobación incluye la solicitud de vacaciones.

You might see article omission in very reduced styles such as:

• form headings
• database labels
• bullet points
• note-taking

But as a full sentence, the articles should stay.

In standard Spanish pronunciation, incluye is usually pronounced roughly like in-KLU-ye.

A few points for learners:

• The stress falls on klu: in-CLU-ye
• The y sound in -ye is softer than an English j
• In many accents in Spain, y and ll are pronounced the same

So incluye should not sound like in-cloo-jee or in-cloo-eye.

Yes. Depending on context, vacaciones can refer to:

• vacation
• holidays
• time off from work or school

In this sentence, because it mentions solicitud, the likely meaning is a formal request for leave/time off, especially in a work context.

So although the literal words might suggest holidays, the practical meaning is more like vacation leave or time off.

Yes. It sounds quite formal, administrative, or corporate.

The vocabulary choices make it sound official:

• aprobación
• incluye
• solicitud

This is the kind of Spanish you might see in:

• HR systems
• approval emails
• internal company documents
• forms and workflows

In more everyday speech, people might say something simpler depending on context, but this sentence is perfectly natural in formal Spanish.