Підтвердження оплати є в повідомленні.

Because оплати is the genitive singular form of оплата (payment).

In Ukrainian, one noun often modifies another by using the genitive case, where English would often use of or a noun used like an adjective:

• підтвердження оплати = confirmation of payment / payment confirmation

So:

• підтвердження = confirmation
• оплати = of payment

This is a very common pattern in Ukrainian.

Here підтвердження is in the nominative singular.

It is the grammatical subject of the sentence:

• Підтвердження оплати = the payment confirmation
• є в повідомленні = is in the message

So the whole sentence is structured around підтвердження оплати as the thing being talked about.

Є means is / exists / there is.

In this sentence, it links the subject to its location:

• Підтвердження оплати є в повідомленні.
  = The payment confirmation is in the message.

Ukrainian often omits the present-tense verb to be, but є can still appear, especially when the speaker wants to sound a bit clearer, more explicit, or slightly more formal.

Yes. A very natural version is:

• Підтвердження оплати в повідомленні.

In everyday Ukrainian, the present-tense to be is often omitted.

The version with є is still correct. It can sound a little more explicit, as if emphasizing that the confirmation really is located there.

So both are possible:

• Підтвердження оплати є в повідомленні.
• Підтвердження оплати в повідомленні.

Because after в meaning in, Ukrainian normally uses the locative case when talking about location.

The base noun is:

• повідомлення = message / notification

Its locative singular form is:

• у/в повідомленні = in the message

So:

• в повідомлення would not be correct here for simple location
• в повідомленні is correct because it means inside / in the message

Повідомленні is the locative singular form of повідомлення.

This happens because the preposition в here means in, which expresses location.

So the pattern is:

• повідомлення = message
• в повідомленні = in the message

This is a very useful pattern to remember with places, containers, texts, apps, emails, and so on.

Both в and у can mean in.

Ukrainian often chooses between them for ease of pronunciation and smooth sound. This is called euphony.

So you may hear either:

• в повідомленні
• у повідомленні

Both are correct. The choice usually depends on the surrounding sounds and speaking rhythm, not on a difference in meaning.

No, Ukrainian word order is fairly flexible.

The neutral order here is:

• Підтвердження оплати є в повідомленні.

But other orders are possible if you want to shift emphasis, for example:

• В повідомленні є підтвердження оплати.
  = There is a payment confirmation in the message.

This version puts the location first and sounds a bit like introducing new information: In the message, there is a payment confirmation.

So word order can change according to emphasis, even though the basic meaning stays similar.

It can mean both, depending on context.

Повідомлення is a broad word that can refer to:

• a message
• a notification
• a notice
• a communication

So in real life, this sentence could mean something like:

• the confirmation is in the message
• the confirmation is in the notification

The exact English choice depends on the situation.

Because Ukrainian does not have articles like English a and the.

So a noun like повідомлення can mean:

• a message
• the message

The context tells you which one is intended.

That means:

• Підтвердження оплати є в повідомленні can be understood as
  The payment confirmation is in the message
  or, depending on context, A payment confirmation is in the message

English requires an article; Ukrainian usually does not.

It can match either English phrasing.

Literally, the structure is closer to:

• confirmation of payment

But in natural English, you might often say:

• payment confirmation

So Ukrainian uses the genitive structure:

• підтвердження оплати

where English might use either:

• confirmation of payment
• payment confirmation

Both represent the same idea.

It sounds mostly neutral and slightly formal/clear, especially because of є.

You could easily see it in:

• customer support
• banking or payment messages
• app instructions
• email or chat support

A more conversational version might omit є:

• Підтвердження оплати в повідомленні.

But the original sentence is perfectly natural and clear, especially in written communication.