During the OpenEdge installation process, you select the languages that can be used during the product's execution. It is possible to have several translated PROMSGS files installed into the OpenEdge destination path\prolang subdirectory due to this selection process. During the installation process, the PROMSGS files for the language identified as the default language are copied from the OpenEdge destination path\prolang subdirectory to the OpenEdge-install-dirdirectory.

The PROMSGS files contain the most up-to-date messages at the time the OpenEdge product is released. However, the PROMSGS files are constantly being updated. Consequently, add-on products and OpenEdge install service packs that are released after the product release date can contain even more recently updated PROMSGS files. As each OpenEdge add-on product is installed, the installation program checks to ensure that the newest copy of the PROMSGS file is being used by all products; all products use the centrally located copy of the PROMSGS file stored in the OpenEdge-install-dir directory.