Re-add missing file (#603)

* Re-add missing file

* Update README.md

* Update README.md

* Update SUMMARY.md

* Fix missing content

* Fix Sensi in toc

* Fix sensi in toc

Author: DebbieAtSeam

docs/SUMMARY.md

@@ -42,7 +42,8 @@
 * [🔒 Smart Locks](products/smart-locks/README.md)
   * [Locking and Unlocking Smart Locks](products/smart-locks/lock-and-unlock.md)
   * [Creating and Managing Smart Lock Access Codes](products/smart-locks/access-codes/README.md)
-    * [Creating Access Codes](capability-guides/smart-locks/access-codes/creating-access-codes.md)
+    * [Creating Access Codes](capability-guides/smart-locks/access-codes/creating-access-codes/README.md)
+      * [Understanding Code Constraints](capability-guides/smart-locks/access-codes/creating-access-codes/understanding-code-constraints.md)
     * [Retrieving Access Codes](products/smart-locks/access-codes/retrieving-access-codes.md)
     * [Modifying Access Codes](products/smart-locks/access-codes/modifying-access-codes.md)
     * [Deleting Access Codes](products/smart-locks/access-codes/deleting-access-codes.md)
@@ -135,7 +136,7 @@
   * [Update Multiple Linked Access Codes](api/access_codes/update-multiple-linked-access-codes.md)
   * [Delete an Access Code](api/access_codes/delete.md)
   * [Pull a Backup Access Code](api/access_codes/pull_backup_access_code.md)
-  * [Report Device Access Code Constraints](api/access_codes/report_device_constrains.md)
+  * [Report Device Access Code Constraints](api/access_codes/report_device_constraints.md)
   * [Unmanaged Access Codes](api/access_codes/unmanaged/README.md)
     * [List Unmanaged Access Codes](api/access_codes/unmanaged/list.md)
     * [Get an Unmanaged Access Code](api/access_codes/unmanaged/get.md)
@@ -316,7 +317,7 @@
   * [Sandbox Salto Space Access System](developer-tools/sandbox-and-sample-data/sandbox-salto-space-access-control-system.md)
   * [Sandbox Schlage Encode Locks](device-guides/sandbox-and-sample-data/schlage-encode-sample-data.md)
   * [Sandbox Seam Bridge](device-guides/sandbox-and-sample-data/seam-bridge-sample-data.md)
-  * [Sandbox Seni Thermostats](device-guides/sandbox-and-sample-data/sensi-thermostat-sample-data.md)
+  * [Sandbox Sensi Thermostats](developer-tools/sandbox-and-sample-data/sandbox-sensi-thermostats.md)
   * [Sandbox SmartThings Hub](device-guides/sandbox-and-sample-data/smartthings-sample-data.md)
   * [Sandbox Tedee Locks](developer-tools/sandbox-and-sample-data/sandbox-tedee-locks.md)
   * [Sandbox TTLock Locks](device-guides/sandbox-and-sample-data/ttlock-sample-data.md)
@@ -350,7 +351,7 @@
         * [Step 5: Set up Door Locks](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-plastic-card-encoding-app/developing-your-visionline-plastic-card-encoding-app-using-a-real-visionline-server/step-5-set-up-door-locks.md)
         * [Step 6: Program Door Locks](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-plastic-card-encoding-app/developing-your-visionline-plastic-card-encoding-app-using-a-real-visionline-server/step-6-program-door-locks.md)
         * [Step 7: Create a Production Workspace](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-plastic-card-encoding-app/developing-your-visionline-plastic-card-encoding-app-using-a-real-visionline-server/step-7-create-a-production-workspace.md)
-        * [Step 8: Connect Your Visionline Development Account to Seam](device-and-system-integration-guides/assa-abloy-visionline-access-control-system-in-development/visionline-acs-setup-instructions/developing-and-launching-your-visionline-plastic-card-encoding-app/developing-your-visionline-plastic-card-encoding-app-using-a-real-visionline-server/step-8-connect-your-visionline-development-account-to-seam.md)
+        * [Step 8: Connect Your Visionline Development Account to Seam](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-plastic-card-encoding-app/developing-your-visionline-plastic-card-encoding-app-using-a-real-visionline-server/step-8-connect-your-visionline-development-account-to-seam.md)
         * [Next Steps](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-plastic-card-encoding-app/developing-your-visionline-plastic-card-encoding-app-using-a-real-visionline-server/next-steps.md)
       * [Developing Your Visionline Plastic Card Encoding App Using a Sandbox Workspace](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-plastic-card-encoding-app/developing-your-visionline-plastic-card-encoding-app-using-a-sandbox-workspace/README.md)
         * [Step 1: Create a Sandbox Workspace](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-plastic-card-encoding-app/developing-your-visionline-plastic-card-encoding-app-using-a-sandbox-workspace/step-1-create-a-sandbox-workspace.md)
@@ -361,7 +362,7 @@
         * [Step 2: Configure a Visionline User Account](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-plastic-card-encoding-app/launching-your-visionline-plastic-card-encoding-app-to-a-live-site/step-2-configure-a-visionline-user-account.md)
         * [Step 3: Purchase and Import the Callback Option from ASSA ABLOY](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-plastic-card-encoding-app/launching-your-visionline-plastic-card-encoding-app-to-a-live-site/step-3-purchase-and-import-the-callback-option-from-assa-abloy.md)
         * [Step 4: Create a Production Workspace](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-plastic-card-encoding-app/launching-your-visionline-plastic-card-encoding-app-to-a-live-site/step-4-create-a-production-workspace.md)
-        * [Step 5: Connect Your Visionline Production Account to Seam](device-and-system-integration-guides/assa-abloy-visionline-access-control-system-in-development/visionline-acs-setup-instructions/developing-and-launching-your-visionline-plastic-card-encoding-app/launching-your-visionline-plastic-card-encoding-app-to-a-live-site/step-5-connect-your-visionline-production-account-to-seam.md)
+        * [Step 5: Connect Your Visionline Production Account to Seam](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-plastic-card-encoding-app/launching-your-visionline-plastic-card-encoding-app-to-a-live-site/step-5-connect-your-visionline-production-account-to-seam.md)
     * [Developing and Launching Your Visionline Mobile Key App](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/README.md)
       * [Developing Your Visionline Mobile Key App](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/developing-your-visionline-mobile-key-app/README.md)
         * [Step 1: Complete the ASSA ABLOY Mobile Development Course](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/developing-your-visionline-mobile-key-app/step-1-complete-the-assa-abloy-mobile-development-course.md)
@@ -373,7 +374,7 @@
         * [Step 7: Set up Door Locks with BLE Profiles](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/developing-your-visionline-mobile-key-app/step-7-set-up-door-locks-with-ble-profiles.md)
         * [Step 8: Program Door Locks](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/developing-your-visionline-mobile-key-app/step-8-program-door-locks.md)
         * [Step 9: Create a Production Workspace](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/developing-your-visionline-mobile-key-app/step-9-create-a-production-workspace.md)
-        * [Step 10: Connect Your Visionline Development Account to Seam](device-and-system-integration-guides/assa-abloy-visionline-access-control-system-in-development/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/developing-your-visionline-mobile-key-app/step-10-connect-your-visionline-development-account-to-seam.md)
+        * [Step 10: Connect Your Visionline Development Account to Seam](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/developing-your-visionline-mobile-key-app/step-10-connect-your-visionline-development-account-to-seam.md)
         * [Next Steps](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/developing-your-visionline-mobile-key-app/next-steps.md)
       * [Launching Your Visionline Mobile Key App](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/launching-your-visionline-mobile-key-app/README.md)
         * [Step 1: Obtain ASSA ABLOY Certification for Your Mobile Key App](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/launching-your-visionline-mobile-key-app/step-1-obtain-assa-abloy-certification-for-your-mobile-key-app.md)
@@ -384,8 +385,8 @@
         * [Step 6: Configure a Visionline User Account](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/launching-your-visionline-mobile-key-app/step-6-configure-a-visionline-user-account.md)
         * [Step 7: Purchase and Import the Callback and Mobile Service Options from ASSA ABLOY](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/launching-your-visionline-mobile-key-app/step-7-purchase-and-import-the-callback-and-mobile-service-options-from-assa-abloy.md)
         * [Step 8: Create a Production Workspace](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/launching-your-visionline-mobile-key-app/step-8-create-a-production-workspace.md)
-        * [Step 9: Connect Your Visionline Production Account to Seam](device-and-system-integration-guides/assa-abloy-visionline-access-control-system-in-development/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/launching-your-visionline-mobile-key-app/step-9-connect-your-visionline-production-account-to-seam.md)
-  * [Configuring Visionline Mobile Credentials](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/credential-types/README.md)
+        * [Step 9: Connect Your Visionline Production Account to Seam](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/visionline-acs-setup-instructions/developing-and-launching-your-visionline-mobile-key-app/launching-your-visionline-mobile-key-app/step-9-connect-your-visionline-production-account-to-seam.md)
+  * [Configuring Visionline Mobile Credentials](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/configuring-visionline-mobile-credentials/README.md)
     * [Issuing Various Types of Guest Mobile Credentials](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/configuring-visionline-mobile-credentials/issuing-various-types-of-guest-mobile-credentials.md)
     * [Issuing Various Types of Guest Joiner Mobile Credentials](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/configuring-visionline-mobile-credentials/issuing-various-types-of-guest-joiner-mobile-credentials.md)
     * [Retrieving Guest and Common Entrances](device-and-system-integration-guides/assa-abloy-visionline-access-control-system/configuring-visionline-mobile-credentials/retrieving-guest-and-common-entrances.md)
@@ -444,8 +445,8 @@
 * [Schlage Locks](device-and-system-integration-guides/schlage-locks/README.md)
   * [Schlage Locks Setup Instructions](device-and-system-integration-guides/schlage-locks/schlage-locks-setup-instructions.md)
   * [Get started with Schlage Locks](device-guides/get-started-with-schlage-locks.md)
-* [Sensi Thermostats](device-and-system-integration-guides/sensi-thermostats.md)
-  * [Get Started with Sensi Thermostats](device-and-system-integration-guides/get-started-with-sensi-thermostats.md)
+* [Sensi Thermostats](device-and-system-integration-guides/sensi-thermostats/README.md)
+  * [Get Started with Sensi Thermostats](device-and-system-integration-guides/sensi-thermostats/get-started-with-sensi-thermostats.md)
 * [Get started with SmartThings Hubs + Smart Locks](device-guides/get-started-with-smartthings-hubs-+-smart-locks.md)
 * [Tedee Locks](device-and-system-integration-guides/tedee-locks/README.md)
   * [Get Started with Tedee Locks](device-and-system-integration-guides/tedee-locks/get-started-with-tedee-locks.md)