diff --git a/Sources/CardPayments/Models/Vault.swift b/Sources/CardPayments/Models/Vault.swift
index d6d138aba..91e239152 100644
--- a/Sources/CardPayments/Models/Vault.swift
+++ b/Sources/CardPayments/Models/Vault.swift
@@ -1,12 +1,14 @@
 import Foundation
 
 /// This class is used to configure a CardRequest for vaulting
-/// CustomerID is optional. When set, this property will be used to associate  a payment method with vault of customer with this ID
-/// If customerID is not specified, one will be generated by the PayPal API
 public struct Vault {
     
+    /// Property used to associate  a payment method with vault of customer with this ID
     public let customerID: String?
 
+    /// Creates an instance of a vault object
+    /// - Parameters:
+    ///   - customerID: The identifier for customer. If not specified, PayPal will create one
     public init(customerID: String? = nil) {
         self.customerID = customerID
     }