not able to scan correct data

[Durgaa-G]

Hi,
I am trying with bellow settings. But every time it return "Received code is shorter than minimal length" as an error

onScan.attachTo(document, {
onScan: function(sCode, iQty) {
document.body.innerHTML +=('

onScan>>>> :'+ JSON.stringify(sCode)+'

');
},
onScanButtonLongPress: function() {
document.body.innerHTML += ('

onScanButtonLongPress :

');
},
onScanError: function(oDebug) {
document.body.innerHTML += ('

onScanError :'+JSON.stringify(oDebug) +'

');
},
onPaste: function(sPasted, oEvent) {
document.body.innerHTML += ('

onPaste :'+JSON.stringify(sPasted) +'-------'+JSON.stringify(oEvent)+'

');
}

});