You can find sample BR100 documents
Oracle has announced retirement of Oracle Application Implementation Method (AIM) and any other implementation methodologies as of January 31, 2011.
Oracle Unified Method (OUM) is the single implementation methodology designed to be used for ALL Oracle product implementations. OUM 6.3 was released in January 2015 to add support for Oracle Cloud Applications (SaaS solutions), you can get more info on new features from OUM 6.3
You can also check below link for comparison of OUM vs AIM, its video presentation.
Oracle Unified Method (OUM) vs Oracle AIM
Now in OUM, BR100 of AIM is replaced with MC.050 - Define Application Setups
This Application Setup Documents record the parameters, user-defined codes, and other setups for each module. As requirements definition completes and requirements analysis begins, the components required to complete the configuration fall into place.
You can also extract the setup requirements from existing documentation if you have in place. The main objective is to consolidate the configuration of all modules for centralized maintenance. With the number of separate application databases on the organization’s systems, it becomes a challenge to make sure that the configurations represent the latest mapping decisions.
More AIM BR100 docs, refer here:
Oracle AIM BR100 for Inventory and Purchasing module
Oracle BR100 document Oracle HRMS BR100 document
Oracle i-Recruitment Application Setup BR100 Document