diff --git a/api-ref/source/conf.py b/api-ref/source/conf.py
index 69374cf..84b3c90 100755
--- a/api-ref/source/conf.py
+++ b/api-ref/source/conf.py
@@ -40,7 +40,9 @@ otcdocs_doc_type = 'api-ref'
 otcdocs_service_category = 'network'
 otcdocs_service_title = 'Cloud Connect'
 otcdocs_service_type = 'ccn'
+otcdocs_cloud_environment = 'eu_de'
 otcdocs_search_environment = 'hc_de'
+otcdocs_search_index = 'search_index_de'
 otcdocs_search_url = "https://opensearch.eco.tsi-dev.otc-service.com/"
 
 # If extensions (or modules to document with autodoc) are in another directory,
diff --git a/doc/requirements.txt b/doc/requirements.txt
index 5723799..64e648c 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -7,6 +7,8 @@ reno>=3.1.0 # Apache-2.0
 
 otc-sphinx-directives>=0.1.0
 sphinx-minify>=0.0.1 # Apache-2.0
+
 git+https://gitea.eco.tsi-dev.otc-service.com/infra/otc-metadata.git#egg=otc_metadata
+
 setuptools
 gitpython
\ No newline at end of file
diff --git a/doc/source/conf.py b/doc/source/conf.py
index e653f29..d9533cc 100755
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -41,7 +41,9 @@ otcdocs_doc_type = ''
 otcdocs_service_category = 'network'
 otcdocs_service_title = 'Cloud Connect'
 otcdocs_service_type = 'ccn'
+otcdocs_cloud_environment = 'eu_de'
 otcdocs_search_environment = 'hc_de'
+otcdocs_search_index = 'search_index_de'
 otcdocs_search_url = "https://opensearch.eco.tsi-dev.otc-service.com/"
 
 # If extensions (or modules to document with autodoc) are in another directory,
diff --git a/tox.ini b/tox.ini
index 4d0ccb3..9b0a237 100644
--- a/tox.ini
+++ b/tox.ini
@@ -28,7 +28,7 @@ commands = {posargs}
 [testenv:docs]
 deps =
   -r{toxinidir}/doc/requirements.txt
-  -c https://raw.githubusercontent.com/opentelekomcloud-docs/docs-constraints/main/constraints.txt
+  -c https://raw.githubusercontent.com/opentelekomcloud-docs/docs-constraints/main/constraints/eu_de/internal/constraints.txt
 allowlist_externals =
   mkdir
   cp
diff --git a/umn/source/conf.py b/umn/source/conf.py
index 9c2d640..b9fcfbf 100755
--- a/umn/source/conf.py
+++ b/umn/source/conf.py
@@ -40,7 +40,9 @@ otcdocs_doc_type = 'umn'
 otcdocs_service_category = 'network'
 otcdocs_service_title = 'Cloud Connect'
 otcdocs_service_type = 'ccn'
+otcdocs_cloud_environment = 'eu_de'
 otcdocs_search_environment = 'hc_de'
+otcdocs_search_index = 'search_index_de'
 otcdocs_search_url = "https://opensearch.eco.tsi-dev.otc-service.com/"
 
 # If extensions (or modules to document with autodoc) are in another directory,