Después de haber revisado el justificante del pago, la empleada aceptó la solicitud.

Both are possible, but they are not exactly the same.

• después de revisar = after checking / after reviewing
• después de haber revisado = after having checked / after having reviewed

The structure después de + haber + past participle is the perfect infinitive. It emphasizes that one action was fully completed before the next one happened.

In this sentence:

• haber revisado shows that the review of the receipt happened first
• aceptó shows the later action

So después de haber revisado sounds a bit more explicit and formal than después de revisar.

It is the perfect infinitive.

It is formed with:

• haber
  • past participle

Here:

• haber = auxiliary verb
• revisado = past participle of revisar

This structure is often used to refer to an action completed before another action, especially after expressions like:

• después de
• tras
• por

Example pattern:

• Después de haber comido, salimos. = After having eaten, we went out.

When después is followed by a verb, Spanish normally uses de.

So you say:

• después de comer
• después de haber revisado

Not:

• después comer
• después haber revisado

However, if después is used on its own, or before another phrase, the structure can be different:

• Después, salió de la oficina.
• Después del almuerzo, volvió al trabajo.

Because this sentence is not using a progressive form like was reviewing. It is using the perfect infinitive, which requires a past participle.

So:

• haber revisado = to have reviewed / having reviewed

Not:

• haber revisando ❌

The form revisando is a gerund, used in structures like:

• estaba revisando = was reviewing

That would be a different grammar pattern.

Justificante is a document that proves something, especially a payment, transfer, absence, or procedure. In this sentence, el justificante del pago means something like:

• proof of payment
• payment receipt
• payment confirmation

It is similar to recibo, but not always identical.

• recibo often means a receipt, especially the paper you receive after paying
• justificante emphasizes that the document serves as proof

In administrative or formal contexts in Spain, justificante is very common.

del is a contraction of de + el.

So:

• del pago = of the payment

Here, el pago refers to a specific payment or the payment in question. That is why the definite article is used.

Compare:

• justificante del pago = proof of the payment
• justificante de pago = proof of payment

Both can exist, but justificante del pago points more clearly to a particular payment already understood in the context.

In Spanish, articles are used much more often than in English.

So Spanish commonly says:

• la empleada
• el profesor
• la solicitud

Even where English might simply say:

• the employee
• the teacher
• the application

Here, la empleada means the employee / the staff member, and the article is completely normal.

Yes. Empleada is the feminine form, so it refers to a female employee.

• el empleado = male employee
• la empleada = female employee

If the person’s gender were unknown or irrelevant, a different wording might be chosen depending on context, but in this sentence the worker is clearly identified as female.

Aceptó is the third person singular of the preterite of aceptar.

It means:

• she accepted
• he accepted
• it accepted depending on context

Here it refers to la empleada, so it means she accepted.

The preterite is used because the sentence describes a completed action in the past: the employee accepted the application.

The accent mark distinguishes aceptó from acepto.

• aceptó = he/she accepted → preterite, past
• acepto = I accept → present

So the accent is important both for pronunciation and meaning.

It also shows the stress falls on the last syllable:

• a-cep-TÓ

Solicitud usually means a formal request or application.

Depending on context, it can mean:

• application
• request
• form/request submitted to an office or institution

It is often used in administrative language:

• solicitud de ayuda
• solicitud de visa
• solicitud de inscripción

It overlaps with petición, but petición can sound broader or less bureaucratic.
And aplicación usually does not mean application in the paperwork sense in Spain; it more often means:

• app
• application of something
• implementation

So for forms and official requests, solicitud is the better word.

Yes, definitely.

For example:

• Tras revisar el justificante del pago, la empleada aceptó la solicitud.

This means essentially the same thing.

Differences in feel:

• después de haber revisado = more explicit, a bit more formal, emphasizes completed action
• tras revisar = shorter, concise, also common in formal written Spanish

Both are natural, especially in administrative or formal contexts.

Yes, it sounds fairly formal or administrative.

Clues include:

• después de haber revisado
• justificante del pago
• la solicitud

This is the kind of wording you might see in:

• official emails
• customer service messages
• administrative documents
• legal or bureaucratic contexts

In more everyday spoken Spanish, someone might say something simpler, such as:

• Después de revisar el recibo, la empleada aceptó la solicitud.

That version is a little less formal but still perfectly natural.