diff --git a/loopx/control_plane/quota/settlement_plan.ts b/loopx/control_plane/quota/settlement_plan.ts
index 3b8a637bcf..bd939a204b 100644
--- a/loopx/control_plane/quota/settlement_plan.ts
+++ b/loopx/control_plane/quota/settlement_plan.ts
@@ -81,7 +81,7 @@ export function turnScopedCliSettlementPlan(params: JsonObject): SettlementPlan
     validation.precondition = claimHint + "validate the original Todo deliverable; when complete, run ordinary Todo completion " +
       "with its original declaration and current lease before writeback/spend. Use --evidence for " +
       "an artifact pointer; --result-file requires approved Goal acceptance criteria bound to this Todo, " +
-      "not merely a Todo validator. No invented successor " +
+      "not merely a Todo validator. Link known follow-up work with --successor-todo-id <existing-id>. No invented successor " +
       "or --no-follow-up is required. Todo done does not settle the Turn. " +
       "Keep an unfinished Todo open with its original declaration.";
   }
diff --git a/tests/control_plane/test_quota_settlement.py b/tests/control_plane/test_quota_settlement.py
index 076fdfd50f..27bda4d22e 100644
--- a/tests/control_plane/test_quota_settlement.py
+++ b/tests/control_plane/test_quota_settlement.py
@@ -858,6 +858,8 @@ def test_cli_validation_projects_ordinary_completion_not_terminal_intent() -> No
     assert command is not None
     argv = shlex.split(command)
     assert "--no-follow-up" not in argv
+    assert "--successor-todo-id" in validation["precondition"]
+    assert "--successor-todo-id" not in argv
     assert "--next-agent-todo" not in argv
     assert argv[argv.index("--todo-id") + 1] == TODO_ID
     assert argv[argv.index("--agent-id") + 1] == AGENT_ID