Konstantin,
Hi. It may be just a typo in the document. Try to use the one stated in the Assignment tab as this is normally what is mapped to the application. This document was written by either the SAP COE or RIG department. It was also written a few years ago so either they may have updated it.
Double check with the testing that you have properly mapped this is any of your BAPI Wrapper parameters in the Mobile Application Configuration section.
This is our best guess.
Best Regards,
SAP Mobile Support Team