diff --git a/app/game-api/test/commandTable.test.ts b/app/game-api/test/commandTable.test.ts
index edb2a399..3e0af34c 100644
--- a/app/game-api/test/commandTable.test.ts
+++ b/app/game-api/test/commandTable.test.ts
@@ -595,15 +595,17 @@ describe('buildTurnCommandTable', () => {
             nationGenerals: null,
         });
 
-        const appointment = table.general
-            .flatMap((group) => group.values)
-            .find((command) => command.key === 'che_임관');
+        for (const commandKey of ['che_임관', 'che_등용']) {
+            const command = table.general
+                .flatMap((group) => group.values)
+                .find((candidate) => candidate.key === commandKey);
 
-        expect(appointment).toMatchObject({
-            possible: false,
-            status: 'blocked',
-            reason: '랜덤 임관만 가능합니다',
-        });
+            expect(command).toMatchObject({
+                possible: false,
+                status: 'blocked',
+                reason: '랜덤 임관만 가능합니다',
+            });
+        }
     });
 
     it('hides founding at the Ref maxnation boundary without counting Core id=0', async () => {
diff --git a/app/game-api/test/router.test.ts b/app/game-api/test/router.test.ts
index 93f9761d..f2425ade 100644
--- a/app/game-api/test/router.test.ts
+++ b/app/game-api/test/router.test.ts
@@ -1418,6 +1418,20 @@ describe('appRouter', () => {
             message: expect.stringContaining('랜덤 임관만 가능합니다'),
         });
         expect(randomOnlyWrites).toHaveLength(0);
+
+        await expect(
+            randomOnlyCaller.turns.reserved.setGeneral({
+                generalId: general.id,
+                turnIndex: 0,
+                action: 'che_등용',
+                args: { destGeneralId: 2 },
+                expectedRevision: 0,
+            })
+        ).rejects.toMatchObject({
+            code: 'PRECONDITION_FAILED',
+            message: expect.stringContaining('랜덤 임관만 가능합니다'),
+        });
+        expect(randomOnlyWrites).toHaveLength(0);
     });
 
     it('checks nation treaty-term reservation permission but not full diplomacy state', async () => {
diff --git a/app/game-engine/src/turn/reservedTurnHandler.ts b/app/game-engine/src/turn/reservedTurnHandler.ts
index bdb1afce..1c7b2795 100644
--- a/app/game-engine/src/turn/reservedTurnHandler.ts
+++ b/app/game-engine/src/turn/reservedTurnHandler.ts
@@ -268,12 +268,13 @@ export const applyLegacyGeneralProgression = (
 const resolveConstraintEnv = (
     world: TurnWorldState,
     scenarioMeta: ScenarioMeta | undefined,
-    env: TurnCommandEnv
+    env: TurnCommandEnv,
+    worldConfig: Record<string, unknown>
 ): Record<string, unknown> => {
     const worldMeta = asRecord(world.meta);
     const startYear = typeof scenarioMeta?.startYear === 'number' ? scenarioMeta.startYear : undefined;
     const relYear = typeof startYear === 'number' ? world.currentYear - startYear : undefined;
-    const joinModeRaw = worldMeta.join_mode ?? worldMeta.joinMode;
+    const joinModeRaw = worldConfig.join_mode ?? worldConfig.joinMode ?? worldMeta.join_mode ?? worldMeta.joinMode;
     const joinMode = joinModeRaw === 'onlyRandom' ? 'onlyRandom' : 'full';
     const killturnRaw = worldMeta.killturn;
     const killturn =
@@ -1037,7 +1038,12 @@ export const createReservedTurnHandler = async (options: {
             const worldOverlay = worldRef ? createWorldOverlay(worldRef) : null;
             const worldView = worldOverlay?.view ?? worldRef;
             const baseConstraintEnv = {
-                ...resolveConstraintEnv(context.world, options.scenarioMeta, env),
+                ...resolveConstraintEnv(
+                    context.world,
+                    options.scenarioMeta,
+                    env,
+                    options.getWorld()?.getWorldConfig() ?? asRecord(options.scenarioConfig)
+                ),
                 ...(options.map ? { map: options.map } : {}),
                 ...(options.unitSet ? { unitSet: options.unitSet } : {}),
             };
@@ -2522,7 +2528,7 @@ export const createImmediateGeneralActionExecutor = async (options: {
 
             const state = options.world.getState();
             const constraintEnv = {
-                ...resolveConstraintEnv(state, options.scenarioMeta, env),
+                ...resolveConstraintEnv(state, options.scenarioMeta, env, options.world.getWorldConfig()),
                 ...(options.map ? { map: options.map } : {}),
                 ...(options.world.getUnitSet() ? { unitSet: options.world.getUnitSet() } : {}),
                 cities: options.world.listCities(),
diff --git a/app/game-engine/test/myInformationCommands.test.ts b/app/game-engine/test/myInformationCommands.test.ts
index b8d888c8..7fa43849 100644
--- a/app/game-engine/test/myInformationCommands.test.ts
+++ b/app/game-engine/test/myInformationCommands.test.ts
@@ -161,6 +161,7 @@ const buildImmediateActionWorld = (options: {
     availableInstantRetreat?: boolean;
     lastTurnTime?: Date;
     scenarioConst?: Record<string, unknown>;
+    worldConfig?: Record<string, unknown>;
 }) => {
     const state: TurnWorldState = {
         id: 1,
@@ -209,6 +210,7 @@ const buildImmediateActionWorld = (options: {
             },
         },
         scenarioMeta,
+        worldConfig: options.worldConfig,
         map: options.map,
     };
     const world = new InMemoryTurnWorld(state, snapshot, { schedule });
@@ -694,6 +696,71 @@ describe('my information world commands', () => {
         ]);
     });
 
+    it('rejects recruitment-letter acceptance in a random-appointment-only world', async () => {
+        const recipient = buildGeneral({
+            id: 8,
+            userId: 'user-8',
+            name: '재야장수',
+            nationId: 0,
+            cityId: 1,
+            officerLevel: 0,
+        });
+        const recruiter = buildGeneral({
+            id: 9,
+            userId: 'user-9',
+            name: '등용장수',
+            nationId: 2,
+            cityId: 2,
+        });
+        const map = {
+            id: 'test',
+            name: 'test',
+            cities: [buildMapCity(1, [2]), buildMapCity(2, [1])],
+        };
+        const fixture = buildImmediateActionWorld({
+            general: recipient,
+            additionalGenerals: [recruiter],
+            cities: [
+                { id: 1, name: '낙양', nationId: 0, supplyState: 1, meta: {} },
+                { id: 2, name: '장안', nationId: 2, supplyState: 1, meta: {} },
+            ] as TurnWorldSnapshot['cities'],
+            nations: [
+                {
+                    id: 2,
+                    name: '등용국',
+                    color: '#222222',
+                    typeCode: 'che_중립',
+                    level: 1,
+                    capitalCityId: 2,
+                    chiefGeneralId: recruiter.id,
+                    gold: 0,
+                    rice: 0,
+                    power: 0,
+                    meta: { gennum: 1 },
+                },
+            ] as TurnWorldSnapshot['nations'],
+            map,
+            worldConfig: { joinMode: 'onlyRandom' },
+        });
+        const executor = await createImmediateGeneralActionExecutor({
+            world: fixture.world,
+            reservedTurns: fixture.reservedTurns,
+            scenarioMeta: fixture.scenarioMeta,
+            map,
+        });
+
+        await expect(
+            executor.execute({
+                actionKey: 'che_등용수락',
+                generalId: recipient.id,
+                rng: new RandUtil(new LiteHashDRBG('reject-random-only-recruitment-letter')),
+                args: { destNationId: 2, destGeneralId: recruiter.id },
+            })
+        ).resolves.toEqual({ ok: false, reason: '랜덤 임관만 가능합니다 등용수락 실패.' });
+        expect(fixture.world.getGeneralById(recipient.id)?.nationId).toBe(0);
+        expect(fixture.world.peekDirtyState().logs).toHaveLength(0);
+    });
+
     it('accepts a recruitment letter after the recruiter was deleted and preserves the reserved command', async () => {
         const deletedRecruiterId = 99;
         const originalLastTurn = { command: '내정 특기 초기화', arg: { phase: 2 } };