diff --git a/modules/distr-tracing-tempo-config-multitenancy.adoc b/modules/distr-tracing-tempo-config-multitenancy.adoc
index 001211eb72b0..68ee12be6263 100644
--- a/modules/distr-tracing-tempo-config-multitenancy.adoc
+++ b/modules/distr-tracing-tempo-config-multitenancy.adoc
@@ -9,6 +9,11 @@
 Multitenancy with authentication and authorization is provided in the Tempo Gateway service.
 The authentication uses OpenShift OAuth and the Kubernetes `TokenReview` API. The authorization uses the Kubernetes `SubjectAccessReview` API.
 
+[NOTE]
+====
+The Tempo Gateway service supports ingestion of traces only via the OTLP/gRPC. The OTLP/HTTP is not supported.
+====
+
 .Sample Tempo CR with two tenants, `dev` and `prod`
 [source,yaml]
 ----