لا يوجد ملصق إرجاع في الطرد.

لا يوجد means there is not / there isn’t.

• لا = not
• يوجد = exists / is found

So the phrase is an Arabic way to express English there is no... or there isn’t any....

A very literal sense is something like there is not found or there does not exist.

Here it is just ordinary negation before a verb.

That is because يوجد is a verb, so لا is simply negating the verb:

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

This is not the same structure as the special لا used directly before a noun, as in patterns like لا رجلَ....

So in this sentence, think of لا يوجد as one unit meaning there isn’t.

Because Arabic commonly uses a singular verb in this kind of existential structure, especially when the verb comes first.

Here the thing being talked about is:

• ملصق إرجاع = a return label

That noun phrase is singular and masculine, so يوجد being singular masculine fits naturally.

Also, in verb-first sentences, Arabic often keeps the verb singular even when the noun after it is the thing being referred to.

ملصق إرجاع means return label, and it is a noun phrase made of two nouns.

• ملصق = label / sticker
• إرجاع = return

Together they literally mean something like label of return, which is how Arabic expresses return label.

This is a very common Arabic pattern called an iḍāfa construction.

So:

• ملصق إرجاع = a return label
• ملصق الإرجاع = the return label

The second noun helps define the first noun.

Because the sentence is talking about any return label, not a specific known one.

So ملصق إرجاع is indefinite:

• ملصق إرجاع = a return label
• ملصق الإرجاع = the return label

In English, there is no return label also refers to a non-specific item, so the indefinite Arabic form matches that idea well.

Also, in an iḍāfa structure, the first noun usually does not take الـ unless the whole phrase is meant to be definite in a different way.

Here إرجاع is a noun, not a finite verb.

More specifically, it is a verbal noun (often called a maṣdar) meaning returning or sending back.

So:

• إرجاع = return / returning
• ملصق إرجاع = return label

Arabic often uses verbal nouns in compounds like this, where English might use another noun as an adjective.

في الطرد means in the package / in the parcel.

• في = in
• الطرد = the parcel / package

So the sentence says the return label is not inside the package.

If you wanted to say the label is not on the package, you would normally use على instead:

• على الطرد = on the package

So the choice between في and على depends on whether the label is inside the parcel or attached to the outside.

A fully vocalized version is:

لا يُوجَدُ مُلْصَقُ إِرْجَاعٍ فِي الطَّرْدِ

A careful MSA pronunciation is approximately:

lā yūjadu mulṣaqu irjāʿin fī aṭ-ṭardi

A few useful notes:

• يُوجَدُ here is pronounced yūjadu
• الطرد is pronounced aṭ-ṭard, not al-ṭard, because ط is a sun letter, so the l of الـ assimilates
• In slower, formal reading, the case endings are heard more clearly

In full formal Arabic, the endings are:

لا يُوجَدُ مُلْصَقُ إِرْجَاعٍ فِي الطَّرْدِ

Here is why:

• يُوجَدُ ends in -u because it is a present-tense verb
• مُلْصَقُ is in the nominative position
• إِرْجَاعٍ is genitive because it is the second part of the iḍāfa
• الطَّرْدِ is genitive because it comes after the preposition في

Also notice:

• مُلْصَقُ does not take tanwīn, because it is the first noun in an iḍāfa

Yes. Arabic allows some flexibility in word order.

For example, you could also say:

لا يوجد في الطرد ملصق إرجاع

This still means the same thing: There is no return label in the package.

The difference is mainly one of focus or flow:

• لا يوجد ملصق إرجاع في الطرد puts return label earlier
• لا يوجد في الطرد ملصق إرجاع puts in the package earlier

Both are natural.

Yes. A common alternative is:

ليس في الطرد ملصق إرجاع

This also means There is no return label in the package.

So both are possible:

• لا يوجد ملصق إرجاع في الطرد
• ليس في الطرد ملصق إرجاع

The version with لا يوجد is very common for expressing existence or non-existence, so it is a useful pattern to learn well.