diff --git a/iam/src/main/java/com/baiyue/iam/client/OverseasStorageFeeClient.java b/iam/src/main/java/com/baiyue/iam/client/OverseasStorageFeeClient.java
index 1a1849d69..6c5b4f9f7 100644
--- a/iam/src/main/java/com/baiyue/iam/client/OverseasStorageFeeClient.java
+++ b/iam/src/main/java/com/baiyue/iam/client/OverseasStorageFeeClient.java
@@ -6,7 +6,6 @@ import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestHeader;
-import org.springframework.web.bind.annotation.RequestParam;
 
 /** Internal Warehouse contract for a customer's default overseas storage fees. */
 @FeignClient(name = "warehouse-service", contextId = "overseasStorageFeeClient",
@@ -20,9 +19,9 @@ public interface OverseasStorageFeeClient {
 
     @DeleteMapping("/defaults")
     ApiResponse<Void> compensate(@RequestHeader("X-Internal-Service-Token") String token,
-                                 @RequestParam long tenantId,
-                                 @RequestParam String initializationKey);
+                                 @RequestBody CompensationRequest request);
 
     record InitializationRequest(long tenantId, long operatorId, String initializationKey) { }
     record InitializationResponse(Long configId, boolean createdByThisInitialization) { }
+    record CompensationRequest(long tenantId, String initializationKey) { }
 }
diff --git a/iam/src/main/java/com/baiyue/iam/service/OverseasStorageFeeInitializationService.java b/iam/src/main/java/com/baiyue/iam/service/OverseasStorageFeeInitializationService.java
index 1fe7a2428..f39b8b6df 100644
--- a/iam/src/main/java/com/baiyue/iam/service/OverseasStorageFeeInitializationService.java
+++ b/iam/src/main/java/com/baiyue/iam/service/OverseasStorageFeeInitializationService.java
@@ -72,7 +72,8 @@ public class OverseasStorageFeeInitializationService {
         RuntimeException last = null;
         for (int attempt = 1; attempt <= MAX_ATTEMPTS; attempt++) {
             try {
-                ApiResponse<Void> response = client.compensate(internalToken, tenantId, key);
+                ApiResponse<Void> response = client.compensate(internalToken,
+                    new OverseasStorageFeeClient.CompensationRequest(tenantId, key));
                 if (response != null && response.successful()) return;
                 last = unavailable(response);
             } catch (RuntimeException ex) { last = ex; }
diff --git a/iam/src/test/java/com/baiyue/iam/service/OverseasStorageFeeInitializationServiceTest.java b/iam/src/test/java/com/baiyue/iam/service/OverseasStorageFeeInitializationServiceTest.java
index ba212535f..acf15019e 100644
--- a/iam/src/test/java/com/baiyue/iam/service/OverseasStorageFeeInitializationServiceTest.java
+++ b/iam/src/test/java/com/baiyue/iam/service/OverseasStorageFeeInitializationServiceTest.java
@@ -33,10 +33,10 @@ class OverseasStorageFeeInitializationServiceTest {
 
     @Test void retriesThreeTimesWithDeterministicKey() {
         when(client.initialize(anyString(), any())).thenThrow(new RuntimeException("timeout"));
-        when(client.compensate(anyString(), anyLong(), anyString())).thenReturn(ApiResponse.success(null));
+        when(client.compensate(anyString(), any(OverseasStorageFeeClient.CompensationRequest.class))).thenReturn(ApiResponse.success(null));
         BizException error = assertThrows(BizException.class, () -> service.initialize(208L, 9L));
         assertEquals(ResultCode.SERVICE_UNAVAILABLE, error.getResultCode());
         verify(client, times(3)).initialize(anyString(), any(OverseasStorageFeeClient.InitializationRequest.class));
-        verify(client).compensate("internal-token", 208L, "iam-customer-create-overseas-fee:208");
+        verify(client).compensate("internal-token", new OverseasStorageFeeClient.CompensationRequest(208L, "iam-customer-create-overseas-fee:208"));
     }
 }