Reserved special characters and keywords introduction
IBM Order Management reserves keywords and special characters that are only used internally.
When naming files, IBM recommends that you choose characters from the standard English-based character set, such as A through Z and 0 (zero) through 9. That way, if you need to localize the application in languages other than English, you do not need to rename files.
Some keywords are reserved for use by the IBM Order Management and are important to keep in mind when programming with APIs and creating error codes.