diff --git a/Model/PaymentManagement.php b/Model/PaymentManagement.php
index 4db326e..f1b7243 100644
--- a/Model/PaymentManagement.php
+++ b/Model/PaymentManagement.php
@@ -204,13 +204,14 @@ public function saveCheckoutPaymentInformationFacade(
 
     public function wrapCallPaylineApiDoWebPaymentFacade($cartId)
     {
+        $cart = $this->cartRepository->getActive($cartId);
         $response = $this->callPaylineApiDoWebPaymentFacade(
-            $this->cartRepository->getActive($cartId), 
+            $cart, 
             $this->paylineCartManagement->getProductCollectionFromCart($cartId),
             $this->cartTotalRepository->get($cartId),
             $this->quotePaymentMethodManagement->get($cartId),
             $this->quoteBillingAddressManagement->get($cartId),
-            $this->quoteShippingAddressManagement->get($cartId)
+            $cart->getIsVirtual() ? null : $this->quoteShippingAddressManagement->get($cartId)
         );
 
         return [
diff --git a/PaylineApi/Request/DoWebPayment.php b/PaylineApi/Request/DoWebPayment.php
index 941a659..d344d12 100644
--- a/PaylineApi/Request/DoWebPayment.php
+++ b/PaylineApi/Request/DoWebPayment.php
@@ -105,7 +105,7 @@ public function setBillingAddress(AddressInterface $billingAddress)
         return $this;
     }
 
-    public function setShippingAddress(AddressInterface $shippingAddress)
+    public function setShippingAddress(AddressInterface $shippingAddress = null)
     {
         $this->shippingAddress = $shippingAddress;
         return $this;
diff --git a/README.md b/README.md
index 7431ab3..82773dc 100644
--- a/README.md
+++ b/README.md
@@ -8,4 +8,13 @@ composer config repositories.paylinebymonext-payline-magento-2 vcs https://githu
 composer require monext/module-payline
 
 php -f bin/magento module:enable Monext_Payline
-php -f bin/magento setup:upgrade
\ No newline at end of file
+php -f bin/magento setup:upgrade
+
+## Configuration
+*Find Payline configuration menu under STORES > Settings > Configuration > SALES > Payment Methods
+*Fill your merchant ID and access key under the "Common settings" section.
+*Contracts are imported under the "Payline Contracts" section. The multi-select "Contracts" fied allows to choose which one will be visible on your store.
+* "Payment solutions" section displays the "Payline - Web Payment Cpt" method configuration (more to come). Select your payment options and order status mapping in this section.
+
+##  Payline Category Mapping
+The dedicated "Payline Category Mapping" field is added by the Payline extension under the "Content" section of each product category. The drop-down list allows to map your custom category with one from Payline's nomenclature. This mapping is necessary for partner solutions like Oney, Cofinoga, Cetelem,...