diff --git a/modules/mesh-delivery-builder/internal/build/run.go b/modules/mesh-delivery-builder/internal/build/run.go
index 66c5ae51..9c1ed277 100644
--- a/modules/mesh-delivery-builder/internal/build/run.go
+++ b/modules/mesh-delivery-builder/internal/build/run.go
@@ -1021,11 +1021,7 @@ func (n *askNotes) note(ctx context.Context, language, id, step string) error {
 		v.Asks = map[string]string{}
 	}
 	v.Asks[language] = id
-	if err := n.b.Claimer.Finish(ctx, n.cl, v); err != nil {
-		return err
-	}
-	n.b.handAsk(n.cl.Key, language, id)
-	return nil
+	return n.b.Claimer.Finish(ctx, n.cl, v)
 }
 
 // runLane puts the lane's part of the build as one ask on its build seat's stream (the delivery stream for a trunk key, the
@@ -1100,6 +1096,9 @@ func (b *Builder) runLane(ctx context.Context, l *lane, repository string, m mes
 			l.err = err
 			return
 		}
+		// A request to build the key again by hand is answered the ask as asked once it is put, not once it is noted: a
+		// put the stream refuses after the note answers the key's failure (BuildAgainResult.Asks).
+		b.handAsk(asked.cl.Key, language, ask.ID)
 	}
 	step, ask, err := b.answer(ctx, l, ask, asked, module, m.Fp2)
 	if err != nil {
diff --git a/modules/mesh-delivery-builder/internal/build/run_test.go b/modules/mesh-delivery-builder/internal/build/run_test.go
index 37c788f3..2212b97e 100644
--- a/modules/mesh-delivery-builder/internal/build/run_test.go
+++ b/modules/mesh-delivery-builder/internal/build/run_test.go
@@ -891,6 +891,8 @@ func TestABuildAskWaitingInItsStreamIsNotBounded(t *testing.T) {
 		during bool
 		// standing is a key taken as it stands (left building): its claim is the key's own revision, not a new one.
 		standing bool
+		// putRefused is a stream that refuses the ask after its note was written to the key.
+		putRefused bool
 	}{
 		{name: "build again: a look the builder queued during the by-hand build still runs afterwards", again: true, during: true,
 			key: &builds.BuilderBuild{State: builds.BuildFailed, Error: "ace: no tun"}},
@@ -908,6 +910,10 @@ func TestABuildAskWaitingInItsStreamIsNotBounded(t *testing.T) {
 		{name: "build again: a build that fails before its asks says the key failed, not that it was asked", again: true, failed: "cannot be read",
 			edit: func(m *meshcatalog.ModulesByModuleValue) { m.Manifest = mdigest('b') },
 			key:  &builds.BuilderBuild{State: builds.BuildFailed, Error: "ace: no tun"}},
+		// An ask is answered as asked only once it is put, not once it is noted in the key (BuildAgainResult.Asks): a put
+		// the stream refuses after the note answers the key's failure and no ask id.
+		{name: "build again: an ask its stream refuses after its note answers the key failed, not asked", again: true, putRefused: true,
+			failed: "the stream refused the ask", key: &builds.BuilderBuild{State: builds.BuildFailed, Error: "ace: no tun"}},
 		{name: "build again: a failed key is written building as a new revision and asks the seat", again: true,
 			key: &builds.BuilderBuild{State: builds.BuildFailed, Error: "ace: the step failed: no tun"}},
 		{name: "build again: a done key is refused, nothing to do", again: true, refuse: "is done: nothing to do",
@@ -965,6 +971,9 @@ func TestABuildAskWaitingInItsStreamIsNotBounded(t *testing.T) {
 					r.b.hands[r.key] = &handWatch{}
 				}
 				r.b.known["m"] = m // the builder has read the modules value, and looks at nothing until asked
+				if c.putRefused {
+					r.b.Asks = buildrun.Asker{Publisher: refusingPublisher{}, Waiter: r.asks, Bound: 2 * time.Second}
+				}
 				if c.standing {
 					r.b.tried[r.key] = true // its look of the key ended before its write: a later look takes over nothing by itself
 				}
@@ -1259,6 +1268,13 @@ func TestABuildAskWaitingInItsStreamIsNotBounded(t *testing.T) {
 	})
 }
 
+// refusingPublisher is an asks stream that refuses every ask.
+type refusingPublisher struct{}
+
+func (refusingPublisher) PublishAsk(context.Context, string, string, []byte) error {
+	return errors.New("the stream refused the ask")
+}
+
 // heldAsks says an ask is held when its id is among held.
 type heldAsks map[string]bool
 
diff --git a/modules/mesh-delivery-indexer/judge/rules.go b/modules/mesh-delivery-indexer/judge/rules.go
index 5e32d375..58a62d7b 100644
--- a/modules/mesh-delivery-indexer/judge/rules.go
+++ b/modules/mesh-delivery-indexer/judge/rules.go
@@ -7970,3 +7970,22 @@ func ObjectsCatalogueProblems(shelf catalogue.Shelf) []string {
 	}
 	return problems
 }
+
+// NodeEngineSeat is the seat the node-engine's module claims as one module (design 47 G §508).
+const NodeEngineSeat = "node-engine"
+
+// nodeEngineClaimProblems refuses a revision in which more than one module claims the seat node-engine, naming them: one
+// module claims it, the node-engine's own (design 47 G §508), in place of refusing every claim.
+func nodeEngineClaimProblems(shelf catalogue.Shelf) []string {
+	var holders []string
+	for module, m := range shelf {
+		if slices.ContainsFunc(m.Claims, func(c catalogue.Claim) bool { return c.Name == NodeEngineSeat }) {
+			holders = append(holders, module)
+		}
+	}
+	if len(holders) < 2 {
+		return nil
+	}
+	slices.Sort(holders)
+	return []string{fmt.Sprintf("%s claim the seat %s, which one module claims (design 47 G §508)", strings.Join(holders, " and "), NodeEngineSeat)}
+}
diff --git a/modules/mesh-delivery-indexer/judge/rules_test.go b/modules/mesh-delivery-indexer/judge/rules_test.go
index 92b0d9fb..c72b7417 100644
--- a/modules/mesh-delivery-indexer/judge/rules_test.go
+++ b/modules/mesh-delivery-indexer/judge/rules_test.go
@@ -6415,6 +6415,60 @@ func TestRulesOther(t *testing.T) {
 	t.Run("AskingForTheRuleSetWithNowhereToPutItIsRefused", caseAskingForTheRuleSetWithNowhereToPutItIsRefused)
 	t.Run("TakesSettingsIsRefusedWhereItCannotMeanAnything", caseTakesSettingsIsRefusedWhereItCannotMeanAnything)
 	t.Run("TheInstallationCheckReadsADefault", caseTheInstallationCheckReadsADefault)
+	t.Run("ASeatNamedViewIsJudgedAgainstTheSeatsViews", caseASeatNamedViewIsJudgedAgainstTheSeatsViews)
+	t.Run("OneModuleClaimsTheNodeEnginesSeat", caseOneModuleClaimsTheNodeEnginesSeat)
+}
+
+// A consumed view, `seat:<seat>.views.<state>`, is accepted where the seat offers the state as a view and refused, by name,
+// where it does not or the seat is unknown (design 47 G §616, §699, §621).
+func caseASeatNamedViewIsJudgedAgainstTheSeatsViews(t *testing.T) {
+	was := catalogue.Seats()
+	t.Cleanup(func() { catalogue.UseSeats(was) })
+	catalogue.UseSeats([]catalogue.Seat{{Name: "mesh-module-assigner", Scope: catalogue.ScopeMesh, Decision: "test",
+		Views: []string{"assignments"}}})
+	for _, row := range []struct{ consume, says string }{
+		{"seat:mesh-module-assigner.views.assignments", ""},
+		{"seat:mesh-module-assigner.views.placement", "does not offer the state"},
+		{"seat:mesh-unknown.views.assignments", "mesh-unknown"},
+		{"seat:mesh-module-assigner.assignments", "does not name a seat and its view"},
+	} {
+		problems := strings.Join(EventProblems(catalogue.Manifest{Module: "reader", Consumes: []string{row.consume}}), "\n")
+		if row.says == "" && problems != "" || row.says != "" && !strings.Contains(problems, row.says) {
+			t.Errorf("%s: problems %q, want %q", row.consume, problems, row.says)
+		}
+	}
+}
+
+// One module of a revision claims the seat node-engine and is accepted; a second is refused naming both (design 47 G §508).
+func caseOneModuleClaimsTheNodeEnginesSeat(t *testing.T) {
+	was := catalogue.Seats()
+	t.Cleanup(func() { catalogue.UseSeats(was) })
+	catalogue.UseSeats([]catalogue.Seat{{Name: NodeEngineSeat, Scope: catalogue.ScopeNode, Decision: "test", HeldByTheEngine: true}})
+	engine := func(module string) []byte {
+		return []byte(`{"module":"` + module + `","version":"1","claims":[{"name":"node-engine","scope":"node"}]}`)
+	}
+	for _, row := range []struct {
+		name  string
+		raws  map[string][]byte
+		wants string
+	}{
+		{"one claim", map[string][]byte{"mesh-host": engine("mesh-host")}, ""},
+		{"two claims", map[string][]byte{"mesh-host": engine("mesh-host"), "other": engine("other")},
+			"mesh-host and other claim the seat node-engine, which one module claims"},
+	} {
+		shelf := catalogue.Shelf{}
+		for name, raw := range row.raws {
+			m, problems := Manifest(raw, nil)
+			if len(problems) > 0 {
+				t.Fatalf("%s: %s refused alone: %v", row.name, name, problems)
+			}
+			shelf[name] = m
+		}
+		got := strings.Join(Between(shelf, 0, nil), "\n")
+		if row.wants == "" && strings.Contains(got, "node-engine") || row.wants != "" && !strings.Contains(got, row.wants) {
+			t.Errorf("%s: %s", row.name, got)
+		}
+	}
 }
 
 // A read of a seat holder's state, `seat:<seat>.<state>`, is accepted where the seat declares the state and refused, by name,