diff --git a/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md b/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
index 1aa51519..804c0c18 100644
--- a/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
+++ b/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
@@ -558,3 +558,6 @@ names the principle that settles it, and is cited as "design 47 G A-n".
 - **A-148** (A-145; principle 7, one release one check) A trunk fault that fails a release's own check rides that
   release as its own commit, as fix 1975's distribution test did: the second reader release carries the builder's
   by-hand answer fix (an ask is answered as put only after its put; issue 1126, ADR 0668 §1).
+- **A-149** (§634, §527, A-120; principles 2 and 7) The node-engine knows its own name at start from its applied
+  store: the record of the module whose fingerprint is its own `MESH_FINGERPRINT`; the finding writer, discovery and
+  the vault login use it. Only on a first start with no such record do they wait for the first composing to name it.