Generally every business has certain processes which are not available in Oracle E-Business suite. Without these processes business cannot function hence implementation team has to build bolt-on applications/custom applications in Oracle Apps instance to support these data needs. Traditionally, most of the Oracle Apps consultants use Common Lookup or Profiles to store this additional information if data needs are small and simple. Common Lookups can be used for mapping activities like Legacy system code gets mapped to Oracle code etc. Profiles can used for user specific/ responsibility specific/ Application specific data needs.If data needs become complicated the general suggestion is to create a Custom Database Table which will store data in required format and structure. When any new database table comes into technical design of a solution it comes with additional customization needs i.e. to provide front end screen (form) for data manipulation activities, build reports on custom tables and incase of Mass updates additional technical components can be needed for mass loading of data. It is quite possible that these unsupported business processes needed data for certain type of Oracle ERP transactions.