diff --git a/api-ref/source/conf.py b/api-ref/source/conf.py
index b44a368..575b3a7 100644
--- a/api-ref/source/conf.py
+++ b/api-ref/source/conf.py
@@ -30,6 +30,17 @@ otcdocs_repo_name = 'docs/mapreduce-service'
 otcdocs_git_fqdn = 'gitea.eco.tsi-dev.otc-service.com'
 otcdocs_git_type = 'gitea'
 
+# Those variables are needed for indexing into OpenSearch
+otcdocs_doc_environment = 'internal'
+otcdocs_doc_link = '/mapreduce-service/api-ref/'
+otcdocs_doc_title = 'API Reference'
+otcdocs_doc_type = 'api-ref'
+otcdocs_service_category = 'big_data'
+otcdocs_service_title = 'MapReduce Service'
+otcdocs_service_type = 'mrs'
+otcdocs_search_environment = 'hc_de'
+otcdocs_search_url = "https://opensearch.eco.tsi-dev.otc-service.com/"
+
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.