Compatible. Normalized mode allows for case-insensitive password matching and is better for users configuring the server with different CCSIDs; it should be used by all new servers. Compatible mode is necessary for servers that contain passwords that were created prior to version 1.3 of Web Server/400. Read about authentication user storage for more information about modes.
Only one entry may exist in the master server configuration file. If more than one entry is found, the last one will be used.