When I was at a careers fair in Leeds Uni, which is the same city in which Farnell's UK base is, they were recruiting graduates of electronics engineering for technical data entry & support. I think it was £16k p.a. Given I could get the same as an engineering student without a degree, it's not really surprising that there are so many mistakes in their catalogue, they simply don't have the right people for the job that understand things like +/-0.05ohm on a 0 ohm resistor doesn't make sense, etc.