diff --git a/doc/ci/pipelines/parent_child_pipelines.md b/doc/ci/pipelines/parent_child_pipelines.md
index 3206345d757771cad43526b6db0493c830f9a884..3fd739087ec9704a8555ae74c9bc4148a7146a35 100644
--- a/doc/ci/pipelines/parent_child_pipelines.md
+++ b/doc/ci/pipelines/parent_child_pipelines.md
@@ -48,6 +48,9 @@ include the child pipeline configuration.
 <i class="fa fa-youtube-play youtube" aria-hidden="true"></i>
 For an overview, see [Parent-Child Pipelines feature demo](https://youtu.be/n8KpBSqZNbk).
 
+NOTE:
+The artifact containing the generated YAML file must not be larger than 5MB.
+
 ## Examples
 
 The simplest case is [triggering a child pipeline](../yaml/index.md#trigger) using a