Serial number Windows XP on the laptop and the sticker don't match

Newly purchased Acer Aspire One 751h was installed in Windows XP Home Edititon. The key on the bottom was different from that which was actually used in the system. A request was made to the support Acer. Was the answer:
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\rGood afternoon.
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It — features a pre-installed OEM systems.
On our laptops (and not only our, and any manufacturer whose computers come with a preinstalled system)
when the output of their factory is preinstallyatsiya system, the so-called "factory Preload".
This Preload assumes a specific model number linked to the "hardware" of the computer
i.e., this system will not be activated on not ACER-native computer (or even on ACER-ovskom, but a different model number).
By the way, this allows you to install an already activated system.
The plant on the hard drives of a specific model series the "filled" one and the same system image (i.e., with the same key !),
and the stickers are pasted with different keys.
It is therefore not surprising that the product key that You see in Windows does not match with the key written on the COA sticker of the laptop.
All this agreed with Microsoft and glued stickers (with different keys) is only a confirmation that the computer is installed
genuine licensed Windows.
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Sincerely,
ACR Hotline

Personally argued the reviewer in a similar situation.
Proved.
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Sticker there.
Accounting docks there.
The number are the same.
All!
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s/is/was/g
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since a long time already it is not working...

As far as I know, a symptom of a Windows license on a piece of iron is the existence of a license sticker. Even if the computer is installed and even activated the OS and will not stickers, it will be considered that is a pirated version. Serial number no one checks because the laptops for activation uses a special method (not particularly delved any).

In other words, if I'm on the laptop with license XP Pro put and buy a pirated build, everything will be fine?

You'll need to understand on the nose, a symptom of DAEC license is the availability of documents confirming the purchase in the accounting Department. Without them — though Oblates from head to toe.
And the question about non-matching serial numbers (the maximum) is solved by a request from the office, in MS.

Talked with a CSI which conducts examination for the license. We (Volgograd), as I understand it, look for a sticker or just the right number of licenses.

need stickers + documents accounting documents for the purchase of licenses. Coincidences do not check, as a rule, if it exists.