Replacement characters

PI MDB property and alias names can contain characters that are not valid in PI AF object names. When AF Link creates objects in PI AF, it substitutes invalid characters with replacement characters in the PI AF object name. Each character that is valid in PI MDB but not valid in PI AF has an assigned replacement character.

You can change the assigned replacement characters, but you need to force a re-migration for your changes to take effect (see Force a remigration).