In reply to TheBigFactHunt:
To be honest, that sounds like an excuse to me.
There is no industry standard route setting course and the vast majority of the best setters in the country have no formal qualifications in setting. The only (to the best of my knowledge) time that you really need to be 'approved' is if you make it onto the IFSC international list.
The best way to get into it is to keep on asking, helping out with the centres own setters (though that will probably involve quite a lot of stripping and washing) and more asking.
If one wall won't let you help, try another one. There's plenty out there.
Whereabouts are you based?
Post edited at 19:17