Some PB properties cannot be supported or are not necessary to support. For example, mobile devices usually do not have a real keyboard, so cannot take advantage of the keyboard to speed up or facilitate user operations, therefore, the PB properties related with keyboard keys including arrow keys, shortcut keys etc. will not be supported in the mobile application. Such PB properties include TabOrder, TabStop, Default, Cancel, DeleteItem, ExtendedSelect etc.
For a complete list of unsupported features, please refer to Supported PB Features for PowerServer Mobile.