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 70a9820b..baba7c7e 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
@@ -486,3 +486,5 @@ names the principle that settles it, and is cited as "design 47 G A-n".
   when it makes it: a state `KV_` and its bucket name (module and name joined by `_`), a log its log stream name
   (`LOG_`, module, `_`, name), a stream its declared name as is, an objects section `OBJ_` and module and name joined
   by `_`. The recovery module calls those mesh-sdk names; it writes no name of its own.
+- **A-122** (A-116, §324; principle 7) The node-build-image seat's `build` act takes the bound the other build seats
+  take, `60m`.