This voucher is NOT a UniPIN voucher. Jager vouchers can be are purchased from Jager directly to provide a vending solution for custom scenarios
As a building manager/owner, you want to control the prepaid credit used by your tenants, because:
you provide credit to tenants free of charge, but want to monitor their usage
you resell electricity
your main meter is a prepaid meter that needs to be topped up and you need a way to know how much to load on the bulk meter to ensure enough credit is available to supply the building