A Java identifier is a value used as the key part of many rules, as the names of parameters in flows, list value rules, summary value rules, and sections, as the names of parameters and local variables in activities, and as an index value for a Page Group
or Value Group
property.
Java identifiers must start with a letter, and contain only letters, numbers, and hyphens. Java identifiers in Pega 7 Platform are similar to those defined in the Java language specifications, except that a hyphen (-) displays in place of an underscore character (_).