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 5c4183d7..3a3cec53 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
@@ -401,3 +401,6 @@ names the principle that settles it, and is cited as "design 47 G A-n".
   The operator-channel asker (the seat holder found on the seat list, the ask published, the router's record read for
   the warrant, `decided` heard) is one mesh-sdk helper that the builder, the teller, the indexer and the runner use; no
   module keeps its own copy. A step's own bound is a key with its own time to live too (A-77), not a timer.
+- **A-102** (§22, §24, A-97; principle 7) A part that puts work on a seat's accepted kind names it in `invokes` as
+  `seat:<seat>.<kind>` (the runner: `seat:mesh-builds.step` and each build seat's `check.step`), and the grants part
+  composes the publish of that accept subject from it, as it composes a verb's call.