Ulysses Space Probe set number?

Pikka

My set's number is 6373604 (BOID 45175) – there is a catalog entry with that number, but there are no listings there yet:
https://www.brickowl.com/catalog/lego-ulysses-space-probe-set-6373604

Here is the same set under different number 6373603 (BOID 405579) Nothing is happening there as well:
https://www.brickowl.com/catalog/lego-ulysses-space-probe-set-6373603

Finally, there is another one – 5006744 (BOID 323841 – but there are a few items on sale there:
https://www.brickowl.com/catalog/lego-ulysses-space-probe-set-5006744

So, when you search the BrickOwl catalog for, let's say 637604, you won't not find any.
Is there a reason for having three catalog entries for one set with just different set numbers? Can we have just one entry with three alternate numbers?

grimsbricksuk

These are the EU & NA version of the instructions.
The correct set number is 5006744

Pikka

Ah yes... Ulysses Space Probe comes in a generic yellow box, so the instruction are meant to identify the set. Funny, Brickset has only one entry and it's 6373604:
https://brickset.com/search?query=6373604&scope=All