The request parameter name has been made required when creating Create Cost Centers and Cost Objects

1. A new object property has been added to Get list of Export Postings called paymentCondition. This provides information about the cash discount attached to the invoice.
2. Invoice dueDate has move out of splitPostings and into the successfulPostings

A new field (invoiceFormat) has been added to the export posting response to indicate the invoice type, such as XRechnung, ZUGFeRD, or regular.