diff --git a/obp-api/src/main/resources/props/sample.props.template b/obp-api/src/main/resources/props/sample.props.template
index 3b2fcf9b6..91eacabcc 100644
--- a/obp-api/src/main/resources/props/sample.props.template
+++ b/obp-api/src/main/resources/props/sample.props.template
@@ -1039,6 +1039,13 @@ outboundAdapterCallContext.generalContext
 # ------------------------------ default entitlements end ------------------------------
 
 ## Mirror request headers to response
+# This feature is driven by FAPI requirements. For instance:
+# The resource server with the FAPI endpoints
+# - shall set the response header x-fapi-interaction-id to the value
+#   received from the corresponding fapi client request header or to a RFC4122 UUID value
+#   if the request header was not provided to track the interaction, e.g.,
+#   x-fapi-interaction-id: c770aef3-6784-41f7-8e0e-ff5f97bddb3a; and
+# - shall log the value of x-fapi-interaction-id in the log entry.
 # mirror_request_headers_to_response=x-fapi-interaction-id,x-jws-signature
 
 ## Echo all request headers to response