Is caster level a prerequisite for creating magic items?
Not directly, no. The “Caster Level” listed for magic items is the default level used for level-dependent effects (such as duration) and dispelling of magic items for random magic items found over the course of an adventure. (It could, if the DM chose, also be used for determination of saving throw DCs, but the normal rule for that is to use the minimum needed for the spell.) Some magic items also have caster level prerequisites; this information is then also listed in the “Prerequisites” section of the description. For a single character doing all the work of creation, the minimum caster level necessary to create a magic item is the level required for the necessary item creation feat, or the minimum needed to cast the highest level spell listed as a prerequisite, whichever is higher. However, that’s just the price for entry; the person creating the item can then set the level the item acts at as high or low as is desired and possible. Thus, a wizard creating a Wand of Magic Missile mu
