Broj mikročipa je u ugovoru pogrešan, ali inače točan.

Because broj mikročipa means the number of the microchip.

In Croatian, after a noun like broj (number), the thing being counted or identified is often put in the genitive case. So:

• broj = number
• mikročip = microchip
• mikročipa = of the microchip

So broj mikročipa literally means number of the microchip.

This is very similar to other Croatian patterns like:

• broj telefona = phone number
• ime grada = name of the city
• vrata kuće = the door of the house

Because u here means in, and it is expressing location: in the contract.

When u means in/inside and answers the question where?, Croatian uses the locative case.

So:

• ugovor = contract
• u ugovoru = in the contract

Compare:

• u ugovoru = in the contract (location, locative)
• u ugovor = into the contract (movement, accusative, though this would be less natural in this context)

So in this sentence, u ugovoru tells you where the mistake appears.

They are in the masculine singular form because they agree with broj.

The subject of the sentence is broj mikročipa. The head noun is broj, and broj is:

• masculine
• singular

So the adjectives must match it:

• pogrešan = wrong/incorrect
• točan = correct/accurate

That is why you get:

• Broj ... je pogrešan
• Broj ... je točan

Even though mikročipa is nearby, it is not the main noun. The main noun is broj, so that is what controls agreement.

Here inače means something like:

• otherwise
• apart from that
• in other respects

So the sentence means that the microchip number is wrong in the contract, but otherwise it is correct.

This is a very common Croatian use of inače. It does not necessarily mean usually here. In other contexts, inače can mean normally / usually, but in this sentence it clearly means otherwise.

So:

• ali inače točan = but otherwise correct

Ali means but. It links two contrasting ideas:

• u ugovoru pogrešan = wrong in the contract
• inače točan = otherwise correct

So the contrast is:

It is wrong in one specific place, but correct in general.

That is exactly the kind of contrast ali is used for.

Because ali introduces a contrasting clause or phrase, and in Croatian it is normally separated by a comma.

So:

• Broj mikročipa je u ugovoru pogrešan, ali inače točan.

This comma works very much like the comma before but in English.

Yes, Croatian word order is quite flexible, and other versions are possible.

The given order is natural and clear:

• Broj mikročipa je u ugovoru pogrešan, ali inače točan.

It places u ugovoru right before pogrešan, which helps emphasize that the incorrectness is limited to the contract.

Other possible word orders include:

• Broj mikročipa je pogrešan u ugovoru, ali inače točan.
• U ugovoru je broj mikročipa pogrešan, ali inače točan.

These are all understandable, but they may shift emphasis slightly.

Croatian often uses word order for focus rather than strict grammatical necessity.

Because Croatian often omits repeated words when the meaning is still clear.

The full version would be:

• Broj mikročipa je u ugovoru pogrešan, ali je inače točan.

But Croatian commonly leaves out the second je because it is understood:

• Broj mikročipa je u ugovoru pogrešan, ali inače točan.

This kind of omission is very natural and common.

Yes, in many contexts pogrešan and netočan can both mean incorrect, but there is a slight nuance.

• pogrešan = wrong, mistaken
• netočan = inaccurate, incorrect, not correct

In this sentence, both could work:

• Broj mikročipa je u ugovoru pogrešan...
• Broj mikročipa je u ugovoru netočan...

However, pogrešan sounds very natural here because it suggests that the number has been written wrongly in the contract.

It most naturally means that the number is wrong as stated in the contract, but that the actual number is otherwise correct.

In other words, the problem is not necessarily with the real microchip number itself. The problem is with the contract’s version of it.

That is exactly why the sentence says:

• u ugovoru pogrešan = wrong in the contract
• ali inače točan = but otherwise correct

So the implication is:

The contract contains the wrong number, but the correct number is known otherwise.

Yes, very often you could.

• čip = chip
• mikročip = microchip

In many everyday contexts, especially with animals or identification devices, speakers may say čip more casually. But mikročip is more explicit and precise.

So:

• broj čipa = chip number
• broj mikročipa = microchip number

Both are possible, depending on context and level of formality/precision.