Serial numbers are 24 digits, no alphabetic characters.
if the number you have received is 18 characters and probably contains alphabetic characters, you have a redemption code, please read the instructions that came with your software, or see Find your Adobe product serial number quickly
Thanks dj_paige for your reply. All 18 characters are numerical digits.
The label also displays:
UE, 001, DV
Did you try to use your redemption code?
The 18-digit number is not a serial number or a redemption code (which is also 24 digits) it is a part number or similar and is the same for all instances of the product, not different for each disc/box like an actual serial number.
Another clue is that Lightroom serial numbers are 24-digits, grouped as 6 groups of 4 digits and the first 4 digits are always 1160.
In my experience, serial numbers and/or redemption codes for boxed discs are on a card with, or a sticker on, the inner box that the discs are in, not on the outside packaging where everyone can see them and steal them.
I purchased two copies of lightroom for myself and another as a gift. They both have the same adobe stickers on the packaging which contains 2 barcodes and sets of numbers. The longest is an 18 digit number located above the bar code on the lower right corner of the sticker. This 18 digit number is different for each of my two copies of lightroom. So this appears to be the serial numbers. Even my packing slip displays these as two distinct serial numbers that are different. There aren't any 24 digit numbers on any of the packaging, box or DVD disk. I've done 2 chat sessions and one phone call with Adobe support. I've also contacted my vendor. So far everyone says that they are escalating my case and have no definitive answers. sigh...