annoying practice - iPod

It’s just a small thing, but I was uploading iPod software onto our laptop last night and amongst the many [many] things I had to complete was a registration to the iPod whatever it was [it took so long the will to live was ebbing away]. It asked for a password – so I put one in. Then after completing the form the password was rejected because it had to be a certain length and use certain characters.

Hello – why not tell me that in the first place to save me re-submitting the form?