Оспорьте операцию, подайте заявление и сохраните экземпляр.

Because they are in the imperative form, used for giving instructions or commands, and -ьте shows either:

• plural you (you all), or
• formal singular you (sir / madam / polite you)

So:

• оспорьте = dispute/challenge
• подайте = submit/file
• сохраните = keep/save

This is very common in official instructions, notices, and customer-service language.

Russian usually omits the subject pronoun in commands when it is obvious. In English, we also usually just say Submit the form rather than You submit the form.

So the sentence has an understood you:

• (Вы) оспорьте операцию, подайте заявление и сохраните экземпляр.

Adding вы is possible, but it is often unnecessary.

They are perfective imperatives because the sentence gives instructions to complete specific actions:

• оспорьте = dispute it
• подайте = submit it
• сохраните = keep/save it

Perfective verbs are very common when the speaker means do this and make sure it gets done.

Compare the general idea:

• подавайте заявление would sound more like submit applications regularly / be submitting
• подайте заявление means submit the application as a completed step

Here the sentence is about a sequence of concrete, finished actions, so perfective is the natural choice.

Because операцию is in the accusative singular. It is the direct object of оспорьте.

Base form:

• операция = operation / transaction

Accusative singular:

• оспорить операцию

This change happens because операция is a feminine noun ending in -я:

• nominative: операция
• accusative: операцию

Because заявление is a neuter inanimate noun, and in the singular its nominative and accusative forms are the same.

So:

• nominative: заявление
• accusative: заявление

That is why you get:

• подайте заявление

with no visible ending change.

For a similar reason. Экземпляр is a masculine inanimate noun, and masculine inanimate nouns usually have the same form in the nominative and accusative singular.

So:

• nominative: экземпляр
• accusative: экземпляр

That is why the sentence says:

• сохраните экземпляр

Оспорьте comes from оспорить, which means to dispute, challenge, contest something.

In this context, оспорьте операцию most naturally means something like:

• dispute a transaction
• challenge a charge
• contest an operation/transaction entry

This is typical banking or administrative language.

It is stronger and more official than simply talk about or argue about something.

Not always. Заявление can mean several related things depending on context, such as:

• an application
• a formal request
• a written statement
• a claim

In official and bureaucratic Russian, подать заявление is a very common expression meaning to submit/file a formal document.

So here it is best understood as submit a claim/request/application, depending on the situation already known from context.

Экземпляр literally means copy or instance of a document.

In official contexts, сохраните экземпляр usually means:

• keep a copy for yourself
• retain one copy of the document
• keep your copy

It often implies a physical or official copy, not just the abstract idea of saved information.

Because the instruction is probably telling the person to keep one copy of the document—typically their own copy.

Russian often uses the singular when one retained copy is enough:

• сохраните экземпляр = keep a copy

If the meaning were specifically keep the copies, then a plural form would be used instead.

The commas separate a series of imperative actions:

• Оспорьте операцию,
• подайте заявление
• и сохраните экземпляр.

This is similar to English instructions like:

• Complete the form, submit it, and keep a copy.

The final two verbs are linked by и = and, while the commas help show the sequence clearly.

Yes, Russian word order is fairly flexible, but this order sounds natural because it follows a practical sequence of steps:

1. оспорьте операцию
2. подайте заявление
3. сохраните экземпляр

A different order is grammatically possible, but it might sound less logical or less useful as an instruction. In official language, Russian often prefers the order that matches the real-world procedure.

Yes, it sounds formal, neutral, and instructional. Clues include:

• the -ьте imperative forms
• the official vocabulary заявление
• the document-related noun экземпляр

This is the kind of wording you might see in:

• a bank message
• a government form
• a help page
• customer support instructions

In casual speech, a person might say the same idea less formally.