Solution : https://service.sap.com/sap/support/notes/743036 (SAP Service marketplace login required)
Key words : 
<saprootdir>\mobile\app\amt\bin\amt, <saprootdir>\mobile\app\amt\bin, business component role maintenance   &, wrong grid control method, add multiple bo attributes, tileset    assign field groups, assign field groups, multiple bo attributes, assign fieldgroup tileset, tileset assignfield groups
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