لا يوجد في الحساب طلب استرجاع.

لا يوجد is a very common Arabic way to say there is not or there are not.

• لا = negation, not
• يوجد = exists / is found

So the structure is literally something like there does not exist...

In this sentence, لا يوجد introduces the idea that something is absent:

• لا يوجد ... = there is no ...

This is an existential structure, similar to English there is / there are.

The verb يوجد is singular masculine because the main noun that comes later, طلب استرجاع, is treated as a singular masculine thing.

Here:

• طلب = request
• طلب استرجاع = a refund request / return request

Since طلب is singular and masculine, يوجد appears as singular masculine too.

Also, in Arabic, when the subject comes after the verb, it is very common for the verb to stay in the singular form.

Arabic often places location or context information before the thing being talked about, especially in existential sentences with يوجد.

So:

• في الحساب = in the account
• طلب استرجاع = a refund request

The sentence order is:

• لا يوجد
• في الحساب
• طلب استرجاع

Literally:

• There does not exist
• in the account
• a refund request

This word order is very natural in Arabic. It highlights the setting first: in the account.

English usually prefers:

• There is no refund request in the account

Arabic often prefers:

• There is not in the account a refund request

even though that sounds less natural in English.

Yes. You could also say:

لا يوجد طلب استرجاع في الحساب

This is also correct.

The difference is mainly one of emphasis and style:

• لا يوجد في الحساب طلب استرجاع puts focus early on in the account
• لا يوجد طلب استرجاع في الحساب presents the missing thing first, then the location

Both are understandable and natural, but the original version is especially common in interface language, customer-service language, and formal notices.

Because طلب is indefinite here.

• طلب = a request
• الطلب = the request

After لا يوجد, Arabic often uses an indefinite noun to mean there is no ... / there isn’t any ...

So:

• لا يوجد طلب = there is no request
• not لا يوجد الطلب in this context

Using the indefinite noun here matches the general existential meaning: there isn’t any refund request present.

Yes, طلب استرجاع is an iḍāfa construction.

An iḍāfa is a noun relationship often translated as:

• X of Y
• or more naturally in English, a compound like refund request

Here:

• طلب = request
• استرجاع = return / recovery / refund, depending on context

So:

• طلب استرجاع literally = request of refund/return
• natural English = refund request or request for a refund

In an iḍāfa:

1. the first noun usually does not take ال unless the whole phrase is definite in a specific way
2. the second noun is in the genitive relationship

Because Arabic often expresses this idea with an iḍāfa instead of a prepositional phrase.

English often says:

• request for a refund

Arabic can express the same idea more compactly:

• طلب استرجاع

So instead of using a word corresponding exactly to for, Arabic simply joins the nouns in an iḍāfa structure.

That is very normal and common.

In fully vocalized MSA, it would typically be:

لا يُوجَدُ في الحِسابِ طَلَبُ استِرْجاعٍ

The endings are:

• يُوجَدُ → -u because it is a present-tense verb in normal indicative form
• الحسابِ → -i because it comes after في, so it is genitive
• طلبُ → -u because it is the delayed subject of يوجد
• استرجاعٍ → -in because it is the second term of the iḍāfa, and it is indefinite genitive

In ordinary writing, these short vowels are usually omitted.

طلب استرجاع is the thing whose existence is being denied, so grammatically it functions as the delayed subject of يوجد.

A simple way to think about it:

• يوجد طلب استرجاع = a refund request exists
• لا يوجد طلب استرجاع = a refund request does not exist

Even though في الحساب appears before it, the real noun that goes with يوجد is طلب استرجاع.

Yes, Arabic could say something like:

ليس هناك طلب استرجاع في الحساب

This also means there is no refund request in the account.

But لا يوجد is often:

• shorter
• more direct
• very common in formal writing, apps, websites, and system messages

So in a UI or account-status message, لا يوجد sounds very natural.

استرجاع has a broad basic sense of getting back, retrieval, recovery, or return. Its exact meaning depends on context.

Possible meanings include:

• refund
• return
• recovery
• retrieval

In an account or shopping context, طلب استرجاع usually means:

• refund request
• or sometimes return request

So the surrounding context tells you which English wording is best.

Because Arabic does not use a present-tense copula the way English does.

In English:

• There is no refund request

In Arabic, you do not insert a separate present-tense verb meaning is in the same way. Instead, Arabic commonly uses يوجد for existential meaning:

• يوجد = there is / there exists
• لا يوجد = there is not / there does not exist

So this is not a missing word problem. It is simply how Arabic expresses existence.

Yes. If you wanted to say There are no refund requests in the account, you would normally make the noun plural.

For example:

• لا توجد في الحساب طلبات استرجاع

Here:

• طلبات = requests (plural)
• طلبات استرجاع = refund requests

You may also notice that the verb often becomes feminine singular with non-human plurals:

• لا توجد ... طلبات ...

That is a common Arabic pattern.