diff --git a/ruoyi-admin/src/main/java/com/ruoyi/api/service/impl/ToWmsServiceImpl.java b/ruoyi-admin/src/main/java/com/ruoyi/api/service/impl/ToWmsServiceImpl.java
index 718ca63..7038437 100644
--- a/ruoyi-admin/src/main/java/com/ruoyi/api/service/impl/ToWmsServiceImpl.java
+++ b/ruoyi-admin/src/main/java/com/ruoyi/api/service/impl/ToWmsServiceImpl.java
@@ -6,6 +6,8 @@ import cn.hutool.core.date.DateUtil;
 import cn.hutool.core.util.ObjUtil;
 import cn.hutool.core.util.StrUtil;
 import cn.hutool.json.JSONUtil;
+import com.ruoyi.algorithm.shadow.InboundShadowObservation;
+import com.ruoyi.algorithm.shadow.ShadowObservationGateway;
 import com.ruoyi.api.domain.*;
 import com.ruoyi.api.service.IToErpService;
 import com.ruoyi.api.service.IToWmsService;
@@ -90,6 +92,8 @@ public class ToWmsServiceImpl implements IToWmsService {
     private IBasStockService stockService;
     @Autowired
     private MydoJobMapper mydoJobMapper;
+    @Autowired
+    private ShadowObservationGateway shadowObservationGateway;
 
 
     @Override
@@ -412,11 +416,22 @@ public class ToWmsServiceImpl implements IToWmsService {
 
                 map.put("v_tray_code", inJob.getTrayCode());
                 map.put("v_code", deviceCode);
+                InboundShadowObservation shadowObservation = InboundShadowObservation.empty();
+                try {
+                    shadowObservation = shadowObservationGateway.planInbound(taskNo, inJob.getTrayCode());
+                } catch (RuntimeException exception) {
+                    log.warn("Inbound shadow observation failed open for task {}: {}",
+                            taskNo, exception.getMessage());
+                }
                 mydoJobMapper.allotInJobSpace(map);
-                if (!"10".equals(map.get("v_result").toString())) {
+                String legacyResultCode = map.get("v_result").toString();
+                if (!"10".equals(legacyResultCode)) {
+                    compareInboundShadow(shadowObservation, legacyResultCode, null);
                     return AjaxResult.error(map.get("v_resultmsg").toString());
                 }else{
                     MydoJob inJob2 = mydoJobMapper.selectInJobByTaskNo(taskNo);
+                    compareInboundShadow(shadowObservation, legacyResultCode,
+                            inJob2 == null ? null : inJob2.getCargoSpaceId());
                     return AjaxResult.success(inJob2);
                 }
             }
@@ -425,5 +440,15 @@ public class ToWmsServiceImpl implements IToWmsService {
         }
     }
 
+    private void compareInboundShadow(InboundShadowObservation observation,
+            String legacyResultCode, String legacySpaceId) {
+        try {
+            shadowObservationGateway.compareInbound(observation, legacyResultCode, legacySpaceId);
+        } catch (RuntimeException exception) {
+            log.warn("Inbound shadow comparison failed open for request {}: {}",
+                    observation == null ? null : observation.requestId(), exception.getMessage());
+        }
+    }
+
 
 }
diff --git a/ruoyi-admin/src/test/java/com/ruoyi/api/service/impl/ToWmsServiceImplShadowTest.java b/ruoyi-admin/src/test/java/com/ruoyi/api/service/impl/ToWmsServiceImplShadowTest.java
new file mode 100644
index 0000000..a5a46b7
--- /dev/null
+++ b/ruoyi-admin/src/test/java/com/ruoyi/api/service/impl/ToWmsServiceImplShadowTest.java
@@ -0,0 +1,95 @@
+package com.ruoyi.api.service.impl;
+
+import com.ruoyi.algorithm.shadow.InboundShadowObservation;
+import com.ruoyi.algorithm.shadow.ShadowObservationGateway;
+import com.ruoyi.api.domain.RequestEnter;
+import com.ruoyi.common.core.domain.AjaxResult;
+import com.ruoyi.job.mydojob.domain.MydoJob;
+import com.ruoyi.job.mydojob.mapper.MydoJobMapper;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InOrder;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+import java.util.HashMap;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.inOrder;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@ExtendWith(MockitoExtension.class)
+class ToWmsServiceImplShadowTest {
+    @Mock
+    private MydoJobMapper mydoJobMapper;
+    @Mock
+    private ShadowObservationGateway shadowObservationGateway;
+    @InjectMocks
+    private ToWmsServiceImpl service;
+
+    private RequestEnter request;
+    private MydoJob beforeLegacy;
+    private MydoJob legacyResult;
+
+    @BeforeEach
+    void setUp() {
+        request = new RequestEnter();
+        request.setTaskNo("TASK-1");
+        request.setDeviceCode("ENTRY-1");
+        beforeLegacy = inboundJob("TRAY-1", null);
+        legacyResult = inboundJob("TRAY-1", "SPACE-LEGACY");
+        when(mydoJobMapper.selectInJobByTaskNo("TASK-1")).thenReturn(beforeLegacy, legacyResult);
+        doAnswer(invocation -> {
+            @SuppressWarnings("unchecked")
+            HashMap<String, Object> parameters = invocation.getArgument(0);
+            parameters.put("v_result", "10");
+            parameters.put("v_resultmsg", "ok");
+            return null;
+        }).when(mydoJobMapper).allotInJobSpace(any());
+    }
+
+    @Test
+    void observesBeforeLegacyAndReturnsTheReloadedLegacyJob() {
+        InboundShadowObservation observation = new InboundShadowObservation(
+                true, "W01", "JOB-1", "READY", "SPACE-SHADOW", "proposal");
+        when(shadowObservationGateway.planInbound("TASK-1", "TRAY-1")).thenReturn(observation);
+
+        AjaxResult result = service.requestEnterByTaskNo(request);
+
+        assertThat(result.get(AjaxResult.DATA_TAG)).isSameAs(legacyResult);
+        InOrder order = inOrder(mydoJobMapper, shadowObservationGateway);
+        order.verify(mydoJobMapper).selectInJobByTaskNo("TASK-1");
+        order.verify(shadowObservationGateway).planInbound("TASK-1", "TRAY-1");
+        order.verify(mydoJobMapper).allotInJobSpace(any());
+        order.verify(mydoJobMapper).selectInJobByTaskNo("TASK-1");
+        order.verify(shadowObservationGateway)
+                .compareInbound(observation, "10", "SPACE-LEGACY");
+        verify(mydoJobMapper, times(1)).allotInJobSpace(any());
+    }
+
+    @Test
+    void shadowExceptionCannotSkipOrReplaceLegacyAllocation() {
+        when(shadowObservationGateway.planInbound("TASK-1", "TRAY-1"))
+                .thenThrow(new IllegalStateException("shadow unavailable"));
+
+        AjaxResult result = service.requestEnterByTaskNo(request);
+
+        assertThat(result.get(AjaxResult.DATA_TAG)).isSameAs(legacyResult);
+        verify(shadowObservationGateway).planInbound("TASK-1", "TRAY-1");
+        verify(mydoJobMapper, times(1)).allotInJobSpace(any());
+    }
+
+    private MydoJob inboundJob(String trayNo, String cargoSpaceId) {
+        MydoJob job = new MydoJob();
+        job.setInOrOut("10");
+        job.setTrayCode(trayNo);
+        job.setCargoSpaceId(cargoSpaceId);
+        return job;
+    }
+}