Obtain JDe One World Documentation on a CD. After you load this, you can go the specific sections, and the search using Acrobat for AAI. Each chapter of the document has descriptions of the AAI's ( and DMAAI's, if you are using distribution). For example, in the Accounts Payable section, there is a chapter called Automatic Accounting Instructions.
The Knowledge Garden will give additional information on AAI's - for example AAI's that affect the Simple Financial Statement R10211B) and Balance Sheet ( R10111B) and Year end close.