Release 2021-10-04

Added the purchaseItemType to contractItems. This enables a more precise handling and differentiation of items in the context of tax and booking rules. Implementing the purchaseItemType to the contractItem also provides an easier way for future migration to our order entities.

Improved the usability of pricing model configuration for business models in our Web Portal. When creating a new option with a usage based pricing model we now give a more precise and understandable example of the configured model.

Added more fields to the creation of debtors in our Web Portal. It is now possible to edit all customer related informations in the process of creation.

Improved the usage based pricing model to handle usages in a contract with the value zero. It is now possible to configure the first step of a pricing model with a zero value usage that gets billed for example when the customer does not use any charging station within a billing period of his contract.

Set the contractItem to deprecated to clean up our API and enhance the use of purchaseItems.

Fixed an issue that caused exceptions when processing payment settlements.