- Supplemental services weren't linked to running contracts, and had to be invoiced separately.

- Several contract types needed a different reminder setting for payments.

- The renewal rates had to be differentiated and automated.

- 'XZ' had to track one-off contracts, for sending renewal letters.

Solutions

- Option to add various supplements in addition to the standard billing details to the main contract, like surcharges, cleaning costs and other accessories.

- Determine special payment conditions for specific residents.

- Set renewal prices based on contract duration or payment period automatically.

- Be able to send reminder letters to lessees of which the contract expires, several months in advance.