Hi everybody, I'm pretty new to the forum and I've been playing pathfinder for few months.
The DC for the creation of a magic items is 5 + CL of the item found the rulebook + 5 (for each unknown prerequisite). However I've found a post in this forum (http://www.giantitp.com/forums/archive/index.php/t-261004.html) which states the following:
"A 4th level caster can make a Handy Haversack, but would have to leave out the Secret Chest prerequisite, as he can't meet it. And he could make it at any caster level from 1st to 4th. Lets assume 4th level. So the skill DC to create the item would therefore be 5 (the base) + 4 (the caster level of the item) +5 (because he didn't use Secret Page , for a total DC of 14. If the caster spends the appropriate amount of gold, and succeeds at a DC 14 check, he has made his Handy Haversack.
As for the effects of caster level for wondrous items (or any other item, as well):
Magic items use the same saving throw bonus for all saves, no matter what the type (Fortitude, Reflex, or Will). A magic item's saving throw bonus equals 2 + 1/2 its caster level (rounded down). The only exceptions to this are intelligent magic items, which make Will saves based on their own Wisdom scores.
A handy haversack at the default caster level (9th) would have saving throw modifiers of +6. The haversack made by our 4th level wizard above would have saves of +4, potentially as low as +2 if he made it at minimum caster level (CL 1)."
I can't find in the official rules where its written that the caster level associated to an item can be decided arbitrarily, and that the CL written within the items description is just the minimum CL to craft the item without malus (eg.the +5 for unknown peer requisite).
Anybody out there who could enlighten me about the rules behind item creation?