HI,
Pls Check The following SAP Documents link(PDF) for more knowledge about mobile integration
For Android APP:-https://websmp205.sap-ag.de/~sapidp/011000358700001087202013E/B1_MobileApp_Guide_Android.pdf
For IOS:-https://help.sap.com/download/businessone/mobileapp/B1_MobileApp_1.9_Guide.pdf
Its Very Help full
Thanx & Regards
Harshit