ID
X1 - Customer Type
X2 - Industry Type
X3 - Firm Size
X4 - Region
X5 - Distribution System
X6 - Product Quality
X7 - E-Commerce Activities
X8 - Technical Support
X9 - Complaint Resolution
X10 - Advertising
X11 - Product Line
X12 - Salesforce Image
X13 - Competitive Pricing
X14 - Warranty & Claims
X15 - New Products
X16 - Order & Billing
X17 - Price Flexibility
X18 - Delivery Speed
X19 - Satisfaction
X20 - Likely to Recommend
X21 - Likely to Purchase
X22 - Purchase Level