Book excerpt: The IBM® Datacap Accounts Payable Capture application is a learning application. Using a number of techniques, it has the ability to learn new instances of known documents when they are introduced into the system. The Accounts Payable Capture workflow can be used for many types of documents and applications, not just invoices. This IBM RedpaperTM publication discusses the role that IBM Datacap Accounts Payable Capture plays in Accounts Payable (AP). You are introduced to the different jobs in the workflow and examine the task profiles, rulesets, rules, functions, and actions that make it work. This paper guides you through the IBM Datacap Accounts Payable Capture application. The application is called a foundation application because it is used as a starting point for capturing complex machine-printed forms, such as invoices, that might contain line items. Because Accounts Payable Capture is continually evolving with new technologies and techniques, your version of the product might differ slightly from what is shown in this paper. However, most of the techniques described in this paper are applicable to any version of the product. After you have gained an understanding of how these technologies interact, you will be able to apply them to other data capture scenarios needing similar capabilities.