§1. Petitions to obtain a dispensation from irregularities or impediments must indicate all the irregularities and impediments. Nevertheless, a general dispensation is valid even for those omitted in good faith, except for the irregularities mentioned in can. 1041, n. 4, and for others brought to the judicial forum, but not for those omitted in bad faith.
§2. If it is a question of the irregularity from voluntary homicide or a procured abortion, the number of the delicts also must be mentioned for the validity of the dispensation.
§3. A general dispensation from irregularities and impediments to receive orders is valid for all the orders.
Source: Code of Canon Law (Vatican.va)