How do I administer a client for the Finmatics booking machine in DATEV Unternehmen Online?

In order to transfer the data from the Finmatics booking machine correctly to the DATEV Rechnungswesen, two settings must be made per client in Unternehmen Online:

The processing form is changed to "Extended". Further information can be found in the DATEV help doc. no.: 1071405. (German article)
On the start page Documents online | Settings | Configure advanced settings | Invoice data interface, select the setting For each item of the invoice (gross), a posting proposal is to be generated. For further information, please refer to the DATEV Help doc. no.: 1071484 (German article)