The management of variables includes a server ID in the SRV (S32) field of the PSC_ENV class. The field can be added to the PiSA a cubes "environment variables" resources list by means of the object menu in the column titles.
In the application server itself, the ID can be stored in the psc.env.srv = <SERVERIDENTIFICATION> property.
Variables can be defined differently in several environments (e.g., in the test or productive environment).