Although the SAP Help documentation of Journal Entry - Post API mentions, that it is possible to post asset with the API Journal Entry - Post, there is no Payload file example defined and the postings do not work.
S/4 Hana Cloud
SAP Documentation error
The API Journal Entry- Post does not support asset posting currently.
The documentation will be changed. The description about the asset posting possibility and the related asset fields will be removed.
journal entry post, api, JournalEntryCreateRequestConfirmation, asset, fixed asset , KBA , AC-INT , Accounting Interface , Problem