Запис є в реєстратурі.

Because after в meaning in / at, Ukrainian normally uses the locative case for location.

• dictionary form: реєстратура
• locative singular: в реєстратурі

For many feminine nouns ending in -а, the locative singular ends in -і.

So:

• реєстратура = the reception/registry office
• в реєстратурі = in/at the reception/registry office

Є is the present-tense form of бути (to be), roughly is / exists.

In Ukrainian, the present tense of to be is often omitted, especially in simple identification:

• Він студент. = He is a student.

But є can still appear, especially when the idea is closer to there is / it is present / it exists.

In Запис є в реєстратурі, є gives the sentence a slightly more explicit sense of existence or presence:

• The record/appointment is at the reception
• There is a record at the reception

So it is grammatical and natural, even though Ukrainian often drops to be in the present tense.

Yes, very often you can hear:

• Запис в реєстратурі.
• Запис у реєстратурі.

That is more compact and conversational. However, without є, the sentence can feel a little more like a statement label or compressed information, depending on context.

With є, the sentence more clearly behaves like a full clause meaning is / exists.

So both are possible, but є makes the existential/location meaning more explicit.

Here в can be understood as in or at, depending on how natural the English translation is in context.

With places like реєстратура, English often prefers at:

• at the reception
• at the registry desk

But literally, Ukrainian в is the usual preposition for in a place, and with some locations English and Ukrainian do not match perfectly word-for-word.

So:

• в реєстратурі literally: in the reception/registry office
• natural English: often at the reception

Yes. В and у are usually just phonetic variants of the same preposition.

Ukrainian switches between them mainly for ease of pronunciation and smoother sound, not for a difference in meaning.

So these are both possible:

• Запис є в реєстратурі.
• Запис є у реєстратурі.

The choice depends on what sounds better with the surrounding words.

Запис is a word with several possible meanings, and the exact one depends on context. Common possibilities include:

• record
• entry
• registration
• appointment
• sometimes recording in other contexts

In medical or administrative contexts, запис often means something like:

• an appointment
• a registration entry
• a record of the booking

So learners should remember that запис is broader than one fixed English word.

Ukrainian word order is flexible, and the beginning of the sentence often shows what the speaker wants to focus on.

• Запис є в реєстратурі.
  Focuses first on the record/appointment.

• В реєстратурі є запис.
  Feels more like There is a record/appointment at the reception.

Both are grammatical, but they do not sound exactly the same in emphasis.

A rough way to think about it:

• Запис є в реєстратурі = The record is at reception
• В реєстратурі є запис = There is a record at reception

Often, yes, if you mean There is a record/appointment at reception in a neutral existential sense.

Ukrainian commonly places the location first in there is/are sentences:

• У кімнаті є стіл. = There is a table in the room.
• В реєстратурі є запис. = There is a record at the reception.

But Запис є в реєстратурі is still fine if the topic is already the record and you are saying where it is.

So the more natural version depends on what information is new and what is already known.

It is in the nominative singular.

That is the basic dictionary form and is used here because запис is the grammatical subject of the sentence.

So:

• запис = nominative singular
• реєстратурі = locative singular after в

A practical pronunciation guide is:

ZA-pys ye v re-ye-stra-TU-ri

A few helpful points:

• запис has stress on the first syllable: ЗАпис
• є sounds roughly like ye
• реєстратурі has stress on -ту-: реєстратУрі
• в may sound very short, and in fast speech the flow matters more than saying each word separately

A more Ukrainian-looking approximation would be:

ZApys ye v reyestraTUri

It sounds neutral to slightly formal/administrative, mostly because of the word реєстратура, which belongs to institutional contexts such as clinics, offices, and registration desks.

The sentence itself is straightforward and normal. It would fit well in:

• a clinic
• a hospital
• an office
• an administrative conversation

So the formality comes more from the setting and vocabulary than from any special grammar.