diff --git a/README_MANUAL_INSTALLATION.md b/README_MANUAL_INSTALLATION.md
index da8a69f7..435dadce 100644
--- a/README_MANUAL_INSTALLATION.md
+++ b/README_MANUAL_INSTALLATION.md
@@ -40,6 +40,16 @@ Configure project using environment file (you can use provided example as quicks
 ```bash
 $ cp examples/env.example .env
 ```
+You can use these parameters as default for a local test, but default values may not be suitable for an internet-exposed service for security reasons. However, these three variables need to be initialized:
+```
+  API_DLT
+  API_DLT_TOKEN
+  API_RESOLVER
+  ABAC_TOKEN
+  ABAC_USER
+  ABAC_URL
+```
+These values should come from an already operational [API_DLT connector](https://gitlab.com/dsg-upc/ereuse-dpp) service instance.
 
 4. Running alembic from oidc module.
 ```
diff --git a/examples/env.example b/examples/env.example
index 1ec807f9..e781473e 100644
--- a/examples/env.example
+++ b/examples/env.example
@@ -2,6 +2,9 @@
 API_DLT='http://$IP_API_DLT'
 API_DLT_TOKEN=$TOKEN
 API_RESOLVER='http://$IP_API_RESOLVER'
+ABAC_TOKEN=$ABAC_TOKEN
+ABAC_USER=$ABAC_USER
+ABAC_URL=$ABAC_URL
 # you might change or register ID_FEDERATED if you change DEVICEHUB_HOST
 ID_FEDERATED='DH12'
 # TODO this should be guessed by DEVICEHUB_HOST, and avoid hardcode of ID_FEDERATED