Ellenőrizzük az értesítési címet, különben hibás marad az adat.

It can mean both, depending on context.

In this sentence, ellenőrizzük can be understood as:

• we check it / we are checking it
• let's check it

Hungarian often uses the same form here, and the surrounding context tells you which reading is more natural. Because the sentence continues with különben (otherwise), English often translates it more naturally as a recommendation or instruction: let's check it, otherwise...

Because Hungarian is using the definite conjugation.

Hungarian verbs have two main present-tense patterns:

• indefinite conjugation: used when there is no definite direct object
• definite conjugation: used when there is a definite direct object

Here the object is az értesítési címet = the notification address, which is definite, so the verb appears in the definite form:

• ellenőrzünk = we check / are checking something non-specific
• ellenőrizzük = we check / are checking it / the specific thing

So the -jük ending helps show that the verb has a definite object.

Hungarian has two forms of the definite article:

• a before a consonant sound
• az before a vowel sound

So:

• az értesítési címet
• az adat

Both értesítési and adat begin with a vowel, so az is required.

This is similar to the difference between a and an in English, although Hungarian uses the same definite meaning in both cases.

Because címet is in the accusative case, which marks the direct object.

• cím = address
• címet = address (as the thing being acted on)

In this sentence, the address is what is being checked, so it takes the accusative ending -t.

The full object is:

• az értesítési címet = the notification address as the direct object

Értesítési is an adjective meaning something like notification-related or for notification.

It comes from értesítés = notification, and the suffix -i often makes an adjective meaning related to something.

So:

• értesítés = notification
• értesítési = notification / notification-related
• értesítési cím = notification address

This -i adjective pattern is very common in Hungarian.

Különben means otherwise.

It introduces what will happen if the first action is not done.

So the structure is:

• Ellenőrizzük az értesítési címet = check the notification address
• különben hibás marad az adat = otherwise the data will remain incorrect

It works very much like English otherwise.

Literally, it means remains faulty/incorrect.

• hibás = faulty, incorrect, wrong
• marad = remains, stays

So:

• hibás marad az adat = the data remains incorrect

In natural English, this is often translated as the data will remain incorrect, even though Hungarian uses the present tense marad. Hungarian often uses the present tense where English prefers will for a future result.

Hungarian adat is singular and usually means a piece of data, a data item, or sometimes an entry/field, depending on context.

So:

• adat = data item / piece of data
• adatok = data, pieces of data

In many technical or administrative contexts, Hungarian uses singular adat where English may use data more generally. So az adat here may refer to one specific record, field, or item of information.

Because Hungarian word order is flexible and often reflects focus or information structure, not just basic grammar.

Both of these are possible:

• hibás marad az adat
• az adat hibás marad

In hibás marad az adat, the sentence gives more prominence to the result hibás (incorrect/faulty). It sounds natural in a warning-like statement: otherwise, incorrect will remain the data → otherwise the data will remain incorrect.

So the meaning is the same, but the chosen order helps emphasize the important consequence.

Because az adat is the subject of the second clause, not the direct object.

Hungarian marks different roles differently:

• the direct object often gets -t
• the subject usually has no special ending in the basic form

So:

• az értesítési címet = direct object → accusative -t
• az adat = subject → no accusative ending

That is why címet changes, but adat does not.