The RID is a 5 byte hexadecimal value. The RID value is the unique ID for your organization, assigned by a standards body. A default RID is provided by the plugin and can be used during development. However, before deployment you must obtain a valid RID from the ISO.
The PIX (proprietary identifier) value uniquely identifies an individual applet. It is a 0 - 11 byte hexadecimal value generated by the IDE or manually set by the developer.