Your new chart of accounts or your product tree may differ from your old one. Your new COA code might use, for example, a segmental approach such as the code below. In any case, it takes time for users to become familiar with things new, so what can you do to improve familiarity, and hence accuracy, during the early days of post go live?
| Business area | Location | Expense Code | Dept |
| X | XX | 0000 | XX |
You might not wish to clutter up your new database with old code references and search routines which will have an early shelf life. There are other ways to develop familiarity. Your intranet, for example, can provide you with an invaluable backup to your training plan. Tools, written in simple javascript, can be used to provide old code new code lookups; or, as in the example below, modified from a live site, a logical lookup to quickly find a new code.