• The file size of the document being uploaded is within the permitted limits.

  This check applies to Microsoft OneDrive external storage.

• A file with the same name already exists in the folder.

var status = true;
        var uniqueNames = [];
        var duplicateNames = [];
        var largeFileNames = [];
        var attachments = this.angular.element("#sc_cat_item").scope().attachments;
        attachments.forEach(function(attachment) {
            var name = attachment['file_name'];
            var size = getSizeInBytes(attachment['size']);
            if (uniqueNames.indexOf(name) != -1) {
                duplicateNames.push(name);
            } else if (size > 4000000) {
                largeFileNames.push(name);
            }
            uniqueNames.push(name);
        });
        if (largeFileNames.length > 0) {
            g_form.addErrorMessage("Size of file should be less than or equal to 4Mb");
            largeFileNames.forEach(function(name) {
                g_form.addErrorMessage(name + " is more than 4Mb");
            });
            status = false;
        }
        if (duplicateNames.length > 0) {
            g_form.addErrorMessage("File names should be unique");
            duplicateNames.forEach(function(name) {
                g_form.addErrorMessage(name + " found with a duplicate name");
            });
            status = false;
        }
        return status;
    }
}
function getSizeInBytes(size) {
    var unit = size.split(" ")[1];
    var value = parseFloat(size.split(" ")[0]);
    switch (unit) {
        case "MB":
            value = value * 1000000;
            break;
        case "KB":
            value = value * 1000;
            break;
    }
    return value;
}