Görevli alacağı bakiyeye mahsup etti; otomatik ödeme talimatı değişmedi.

Görevli literally means the person on duty / the responsible staff member / clerk / official.

It is originally an adjective meaning assigned, in charge, on duty, but it is very often used as a noun for a person:

• görevli = staff member, attendant, official, clerk

In this sentence, a natural English sense is the staff member or the clerk.

In this sentence, it is most naturally from the noun alacak, not from the verb almak.

Here:

• alacak = receivable, amount due, claim, money owed
• alacağı = the receivable / the amount due as a marked direct object

Why does it become alacağı?

• alacak
  • accusative -ı
• final k softens to ğ before a vowel
• so alacak → alacağı

So this is best understood as the amount due / the receivable, not what he/she will receive.

That said, in other contexts alacağı can indeed come from almak and mean something like that he/she will receive. Turkish allows that kind of ambiguity, but the financial context here strongly points to the noun alacak.

Because it is the definite direct object of mahsup etti.

A very common Turkish pattern is:

• unmarked object for a non-specific/general object
• accusative-marked object for a specific/identified object

So here alacağı signals the particular receivable / the specific amount due being discussed.

Compare the idea:

• alacak = a receivable / receivables in a general sense
• alacağı = the receivable / the amount due in question

Mahsup etmek is a fairly formal/accounting word. It means something like:

• to offset
• to set off
• to deduct and apply against
• to credit toward
• to charge against

So alacağı bakiyeye mahsup etti means the staff member applied the receivable to the balance or offset the amount due against the balance.

This is not everyday casual vocabulary; it sounds administrative, financial, or legal.

Bakiyeye is bakiye + dative -e.

• bakiye = balance
• bakiyeye = to the balance / against the balance

With mahsup etmek, Turkish often uses the dative to show the account, balance, or item that something is being applied to.

Also notice the extra y:

• bakiye ends in a vowel
• when another vowel-initial suffix is added, Turkish inserts a buffer consonant y
• so bakiye + e → bakiyeye

Because that -ı is not the accusative here. It is the 3rd person possessive ending used in a Turkish noun compound.

• ödeme = payment
• talimat = instruction, order
• ödeme talimatı = payment instruction

This is a standard Turkish compound pattern:

• first noun stays bare
• second noun takes a possessive-style ending

So:

• otomatik ödeme talimatı = automatic payment instruction

In the sentence, this whole phrase is the subject of değişmedi.

A very useful comparison:

• otomatik ödeme talimatı = the automatic payment instruction (subject/base form)
• otomatik ödeme talimatını = the automatic payment instruction (as a definite object)

So if it were the accusative object, you would expect -nı, not just -ı.

Because değişmek and değiştirmek are different verbs.

• değişmek = to change / to become different
  
  • intransitive
• değiştirmek = to change something / to alter something
  
  • transitive

Here the meaning is:

• otomatik ödeme talimatı değişmedi
• the automatic payment instruction did not change

So the instruction itself remained the same.

If you wanted to say someone did not change the automatic payment instruction, that would be:

• otomatik ödeme talimatını değiştirmedi

That distinction is very important in Turkish.

Yes. The first clause has a very normal Turkish structure:

• Görevli = subject
• alacağı = direct object
• bakiyeye = dative phrase
• mahsup etti = verb

So it follows the common Turkish pattern of putting the verb at the end.

The second clause is also normal:

• otomatik ödeme talimatı = subject
• değişmedi = verb

Turkish word order is flexible, but this sentence sounds natural and standard.

The semicolon links two closely related but separate statements:

• the staff member offset the receivable against the balance
• the automatic payment instruction did not change

It gives a slightly formal, written, administrative tone. That fits the vocabulary of the sentence.

You could also see:

• a full stop
• sometimes a comma in less careful writing
• ve in some rewrites

But the semicolon works well because the two facts are connected, while still being distinct.

Turkish does not have articles like English the and a/an in the same way.

So Turkish often leaves that information to:

• context
• case marking
• word order
• whether the noun is specific or non-specific

For example:

• görevli could be the staff member or a staff member, depending on context
• alacağı feels definite/specific because it has accusative marking
• otomatik ödeme talimatı is interpreted from context as the automatic payment instruction

So when translating into English, you have to choose the article that sounds right in context.

Literally it is automatic payment instruction/order, but depending on context, natural English could be:

• automatic payment instruction
• automatic payment order
• standing payment instruction
• direct debit instruction
• sometimes simply autopay setup

The exact choice depends on the banking or billing system being described. Turkish often uses otomatik ödeme talimatı for the instruction that lets payments be made automatically from an account.