I went through SWACHA and ordered an ACH Audit workbook. It's published by Mid-America Payment Exchange. You can also get one from Mid-America's website at www.mpx.org
December 1 is the deadline. More examiners are starting to review for this. You can also get a copy of the audit at www.nacha.org or you can just follow Appendix Eight straight out of the ACH Rules Book.