diff --git a/engines/instance_verification/TESTING.md b/engines/instance_verification/TESTING.md
index eaef491e9..a8104047c 100644
--- a/engines/instance_verification/TESTING.md
+++ b/engines/instance_verification/TESTING.md
@@ -1,3 +1,4 @@
+## Testing public could client registrations locally
 
 Start RMT with pubcloud engines enabled:
 
@@ -7,10 +8,36 @@ bin/rmt-cli mirror product 2609,2626,2683,2618 # mirror SLE 15.6
 RMT_LOAD_ENGINES=1 bin/rails s -b 0.0.0.0
 ```
 
+Prepare the client:
+
 ```bash
-docker run --rm -ti --privileged registry.suse.com/suse/sle15:15.6 /bin/bash
+docker run --rm -ti --privileged --network=host registry.suse.com/suse/sle15:15.6 /bin/bash
+
+zypper rm -y container-suseconnect
+zypper in -y suseconnect vim less curl
+zypper in -y http://updates.suse.de/SUSE/Products/SLE-Module-Public-Cloud/15-SP6/x86_64/product/noarch/cloud-regionsrv-client-10.1.7-150000.6.108.1.noarch.rpm
+
+mv /etc/zypp/repos.d/* /tmp/ # move out BCI repos
+
+# Set regionsrv = 172.17.0.1:4224
+#     httpsOnly = false
+# in /etc/regionserverclnt.cfg
+
+registercloudguest
+
+```
 
-$ zypper rm -y container-suseconnect
-$ zypper in -y suseconnect
-suseconnect --url http://172.17.0.1:4224
+Register client in PAYG mode, providing instance data:
+
+```
+$ suseconnect --url http://172.17.0.1:4224
 ```
+
+
+
+
+Notes:
+
+* `/usr/lib/zypp/plugins/urlresolver/susecloud` (https://github.com/SUSE-Enceladus/cloud-regionsrv-client) gets the url of the region RMT server and replaces it in the 'susecloud' type zypper services.
+* `registercloudguest` logs to /var/log/cloudregister
+* Full pubcloud test env: https://confluence.suse.com/pages/viewpage.action?spaceKey=publiccloud&title=Setup+Public+Cloud+Development+Environment