It's OK I think if the leading digit of the 13 is a 1 or 3-9, but if it's a 2 then you have an issue. What does a 13-digit number starting 222 mean? I don't see how you can tell if that's MYY or YYX where X is the start of the core serial. Unless you have some other way to know?

🦛

In reply to Re^3: Merging multiple variations of a serial number by hippo
in thread Merging multiple variations of a serial number by Doozer

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