Pengesahan pesanan itu ada alamat penghantaran.

Pengesahan is a noun meaning confirmation or validation.

It is built from the root sah, which means valid, official, or confirmed. The pattern peN- ... -an often forms nouns, so:

• sah = valid / confirmed
• mengesahkan = to confirm / to validate
• pengesahan = confirmation

So in this sentence, pengesahan is the thing itself: the confirmation.

Here, pesanan means order, as in a purchase or booking.

It comes from pesan, which can relate to ordering or requesting, but in other contexts pesanan can also mean message. So yes, it can have more than one meaning.

In this sentence, because it appears with pengesahan and alamat penghantaran, the commercial meaning order is the natural one.

Because Malay usually puts the main noun first and the describing noun after it.

So:

• pengesahan pesanan = confirmation of an order / order confirmation

The head noun is pengesahan, and pesanan tells you what kind of confirmation it is.

This is a very common Malay pattern:

• nombor telefon = phone number
• alamat rumah = home address
• pusat bandar = city centre

English often works the other way around, so this word order can feel backward at first to English speakers.

Itu is a demonstrative, usually meaning that, and in Malay it normally comes after the whole noun phrase.

So:

• pengesahan pesanan itu

can mean:

• that order confirmation
• or, depending on context, the confirmation of that order

Malay often places ini and itu at the end of the noun phrase:

• rumah itu = that house
• buku ini = this book
• pengesahan pesanan itu = that order confirmation

This is different from English, where that comes before the noun.

Ada often means there is / there are, but it can also give the sense of has, contains, or includes, especially in everyday Malay.

So in a structure like:

• X ada Y

it can mean:

• X has Y
• There is Y in/on X

In this sentence, ada alamat penghantaran means that a shipping address is present there.

So ada is doing the job of showing existence/presence, not simple identity.

Not really. Malay does not always use a separate verb the way English does.

In English, you might expect something like:

• The order confirmation has a shipping address
• There is a shipping address on the order confirmation

Malay can express that with ada.

Also, Malay often leaves out a verb like English is in some sentences. For example:

• Dia guru = He/She is a teacher

But here, ada is important because the sentence is about presence/existence, not identity.

If you used ialah or adalah here, the meaning would change and sound wrong for this context.

Again, Malay puts the main noun first.

• alamat = address
• penghantaran = delivery / shipping

So:

• alamat penghantaran = delivery address / shipping address

The word penghantaran comes from hantar meaning to send or to deliver.

So the phrase literally works like address of delivery/shipping, but in natural English we say shipping address.

Yes, it can be a little ambiguous without more context.

Malay noun phrases can sometimes allow more than one interpretation in English. So:

• pengesahan pesanan itu

might be understood as:

1. that order confirmation
2. the confirmation of that order

Usually, context makes it clear.

If the conversation is about a document or email, people will likely understand that order confirmation. If the conversation is about a specific order already mentioned, the confirmation of that order may also fit.

This kind of ambiguity is normal in Malay and is usually resolved by context rather than by changing the grammar.

Yes, it is understandable, but there are other natural ways to express the same idea depending on style.

For example:

• Pengesahan pesanan itu mempunyai alamat penghantaran.
  This is a bit more formal because mempunyai means has.

• Dalam pengesahan pesanan itu ada alamat penghantaran.
  This makes the location more explicit: There is a shipping address in/on that order confirmation.

The original sentence is compact and understandable, especially if the context already makes it clear that the address appears on the order confirmation.