При условии, что страховой случай подтверждён, страховую выплату сделают завтра.

При условии, что means provided that, on condition that, or assuming that. It is close to если (if), but it sounds more formal and more precise.

• Если страховой случай подтверждён, ... = If the insured event is confirmed, ...
• При условии, что страховой случай подтверждён, ... = Provided that / on the condition that the insured event is confirmed, ...

In legal, official, and business language, при условии, что is very common.

Because the preposition при requires the prepositional case.

• dictionary form: условие
• prepositional singular: условии

So:

• при условии = under the condition / on the condition

This is a fixed expression: при условии, что ...

Because что страховой случай подтверждён is a subordinate clause introduced by что.

The structure is:

• main clause: страховую выплату сделают завтра
• subordinate clause: при условии, что страховой случай подтверждён

In Russian, subordinate clauses are separated by commas.

Страховой случай is a standard insurance term. It means the event covered by the insurance policy, the event that gives rise to a payout if it is accepted as valid.

It is a set phrase in insurance language, so learners should treat it almost like one vocabulary item.

Grammatically:

• страховой = insurance-related / insured
• случай = case, event, incident

But together, страховой случай has a specific technical meaning.

Because here it is the direct object of the verb сделают.

• nominative: страховая выплата = the insurance payout
• accusative: страховую выплату = the insurance payout as the object

Since выплата is a feminine noun, the adjective and noun change in the accusative singular:

• страховая выплата → страховую выплату

In Russian, 3rd person plural is often used with an indefinite-personal meaning, where the subject is not named because it is obvious, unknown, or unimportant.

So страховую выплату сделают завтра literally means They will make the insurance payout tomorrow, but in natural English it is usually better rendered as:

• The insurance payout will be made tomorrow
• They’ll make the insurance payout tomorrow
• The company will make the payout tomorrow if the context makes that clear

Russian often prefers this structure instead of explicitly naming the agent.

Сделают is the perfective future of сделать. It implies a completed action: the payout will be made.

Compare:

• сделают = they will do/make it, completed
• делают = they do / are doing
• будут делать = they will be doing / will do, imperfective, focusing more on process or repetition

Here the sentence is about a one-time completed action in the future, so сделают is the natural choice.

Подтверждён is a short-form passive participle used as part of the predicate. It means confirmed.

So:

• страховой случай подтверждён = the insured event is confirmed
• literally: the insurance case is confirmed

This is a very common formal style in Russian, especially in business, legal, and administrative language.

Compare:

• подтвердили страховой случай = they confirmed the insured event
• страховой случай подтверждён = the insured event has been confirmed / is confirmed

The second version focuses on the result, not on who did it.

Russian often uses the short form of passive participles as part of the predicate.

• страховой случай подтверждён = the insured event is confirmed
• подтверждённый страховой случай = a confirmed insured event

So:

• short form (подтверждён) is usually predicative: it says something about the subject
• full form (подтверждённый) behaves more like an adjective modifying a noun

That is why the short form is used here.

Yes. In ordinary Russian writing, ё is often replaced by е, so you may see подтвержден.

Both represent the same word, but подтверждён is the more precise spelling because it shows the correct pronunciation and stress.

For learners, it is very helpful to remember the version with ё.

No, Russian word order is fairly flexible, though this version sounds natural and formal.

The given order:

• При условии, что страховой случай подтверждён, страховую выплату сделают завтра.

You could also say:

• Страховую выплату сделают завтра, при условии, что страховой случай подтверждён.

Both are grammatical. The original sentence puts the condition first, which is common when the condition sets the frame for the whole statement.

Yes, that is grammatical and natural. The difference is mainly in tone.

• Если ... = more neutral and everyday
• При условии, что ... = more formal, official, contractual

In an insurance, legal, or administrative context, при условии, что sounds especially appropriate.

It normally goes with сделают.

So the meaning is:

• the payout will be made tomorrow

not:

• the insured event is confirmed tomorrow

The sentence structure and common sense both point to завтра modifying the main clause verb сделают.