Error???

I just discovered that there are two belgian coins with the same KM code ( 281)
precisely
https://en.numista.com/catalogue/pieces6293.html
and
https://en.numista.com/catalogue/pieces6311.html

Is it an error? or ???
Before the second coin had the code 301

Could someone help to settle this point?
Kind regards
Gianna

It is not a Numista error--it is a Krause one.

While Krause tends to separate the 2008 Belgian euros from the 2009 and forward ones, they just... did not do that with the 2 Euro piece. Sequentially, the second type should be KM#302 (which some other coin sites do claim this type to be); however, Krause still calls it KM#281. Of course, it is still a different type regardless of what Krause says (hence the two separate pages), but we should only call the second page KM#302 when Krause fixes their error.

And here is the topic that first brought this up, if you are interested: https://en.numista.com/forum/topic76096.html.