diff --git a/weed/s3api/s3api_object_retention.go b/weed/s3api/s3api_object_retention.go
index 32307e0e7..41344fbe0 100644
--- a/weed/s3api/s3api_object_retention.go
+++ b/weed/s3api/s3api_object_retention.go
@@ -158,9 +158,10 @@ func validateObjectLockConfiguration(config *ObjectLockConfiguration) error {
 
 	// Validate Rule if present
 	if config.Rule != nil {
-		if config.Rule.DefaultRetention != nil {
-			return validateDefaultRetention(config.Rule.DefaultRetention)
+		if config.Rule.DefaultRetention == nil {
+			return fmt.Errorf("rule configuration must specify DefaultRetention")
 		}
+		return validateDefaultRetention(config.Rule.DefaultRetention)
 	}
 
 	return nil
@@ -242,7 +243,7 @@ func (s3a *S3ApiServer) getObjectRetention(bucket, object, versionId string) (*O
 		}
 	}
 
-	if retention.Mode == "" && retention.RetainUntilDate == nil {
+	if retention.Mode == "" || retention.RetainUntilDate == nil {
 		return nil, fmt.Errorf("no retention configuration found")
 	}
 
diff --git a/weed/s3api/s3api_object_retention_test.go b/weed/s3api/s3api_object_retention_test.go
index a495150b4..1921e9a0b 100644
--- a/weed/s3api/s3api_object_retention_test.go
+++ b/weed/s3api/s3api_object_retention_test.go
@@ -1,600 +1,42 @@
 package s3api
 
 import (
-	"io"
+	"bytes"
+	"encoding/xml"
 	"net/http"
-	"strings"
+	"net/http/httptest"
 	"testing"
 	"time"
 
 	"github.com/seaweedfs/seaweedfs/weed/s3api/s3_constants"
 )
 
-func TestValidateRetention(t *testing.T) {
-	futureTime := time.Now().Add(24 * time.Hour)
-	pastTime := time.Now().Add(-24 * time.Hour)
-
-	tests := []struct {
-		name        string
-		retention   *ObjectRetention
-		expectError bool
-		errorMsg    string
-	}{
-		{
-			name: "Valid GOVERNANCE retention",
-			retention: &ObjectRetention{
-				Mode:            s3_constants.RetentionModeGovernance,
-				RetainUntilDate: &futureTime,
-			},
-			expectError: false,
-		},
-		{
-			name: "Valid COMPLIANCE retention",
-			retention: &ObjectRetention{
-				Mode:            s3_constants.RetentionModeCompliance,
-				RetainUntilDate: &futureTime,
-			},
-			expectError: false,
-		},
-		{
-			name: "Missing Mode",
-			retention: &ObjectRetention{
-				RetainUntilDate: &futureTime,
-			},
-			expectError: true,
-			errorMsg:    "retention configuration must specify Mode",
-		},
-		{
-			name: "Missing RetainUntilDate",
-			retention: &ObjectRetention{
-				Mode: s3_constants.RetentionModeGovernance,
-			},
-			expectError: true,
-			errorMsg:    "retention configuration must specify RetainUntilDate",
-		},
-		{
-			name: "Invalid Mode",
-			retention: &ObjectRetention{
-				Mode:            "INVALID_MODE",
-				RetainUntilDate: &futureTime,
-			},
-			expectError: true,
-			errorMsg:    "invalid retention mode: INVALID_MODE",
-		},
-		{
-			name: "Past RetainUntilDate",
-			retention: &ObjectRetention{
-				Mode:            s3_constants.RetentionModeGovernance,
-				RetainUntilDate: &pastTime,
-			},
-			expectError: true,
-			errorMsg:    "retain until date must be in the future",
-		},
-		{
-			name:        "Empty retention",
-			retention:   &ObjectRetention{},
-			expectError: true,
-			errorMsg:    "retention configuration must specify Mode",
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			err := validateRetention(tt.retention)
-
-			if tt.expectError {
-				if err == nil {
-					t.Errorf("Expected error but got none")
-				} else if err.Error() != tt.errorMsg {
-					t.Errorf("Expected error message '%s', got '%s'", tt.errorMsg, err.Error())
-				}
-			} else {
-				if err != nil {
-					t.Errorf("Expected no error but got: %v", err)
-				}
-			}
-		})
-	}
-}
-
-func TestValidateLegalHold(t *testing.T) {
-	tests := []struct {
-		name        string
-		legalHold   *ObjectLegalHold
-		expectError bool
-		errorMsg    string
-	}{
-		{
-			name: "Valid ON status",
-			legalHold: &ObjectLegalHold{
-				Status: s3_constants.LegalHoldOn,
-			},
-			expectError: false,
-		},
-		{
-			name: "Valid OFF status",
-			legalHold: &ObjectLegalHold{
-				Status: s3_constants.LegalHoldOff,
-			},
-			expectError: false,
-		},
-		{
-			name: "Invalid status",
-			legalHold: &ObjectLegalHold{
-				Status: "INVALID_STATUS",
-			},
-			expectError: true,
-			errorMsg:    "invalid legal hold status: INVALID_STATUS",
-		},
-		{
-			name: "Empty status",
-			legalHold: &ObjectLegalHold{
-				Status: "",
-			},
-			expectError: true,
-			errorMsg:    "invalid legal hold status: ",
-		},
-		{
-			name: "Lowercase on",
-			legalHold: &ObjectLegalHold{
-				Status: "on",
-			},
-			expectError: true,
-			errorMsg:    "invalid legal hold status: on",
-		},
-		{
-			name: "Lowercase off",
-			legalHold: &ObjectLegalHold{
-				Status: "off",
-			},
-			expectError: true,
-			errorMsg:    "invalid legal hold status: off",
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			err := validateLegalHold(tt.legalHold)
-
-			if tt.expectError {
-				if err == nil {
-					t.Errorf("Expected error but got none")
-				} else if err.Error() != tt.errorMsg {
-					t.Errorf("Expected error message '%s', got '%s'", tt.errorMsg, err.Error())
-				}
-			} else {
-				if err != nil {
-					t.Errorf("Expected no error but got: %v", err)
-				}
-			}
-		})
-	}
-}
-
-func TestParseObjectLockConfiguration(t *testing.T) {
-	tests := []struct {
-		name           string
-		xmlBody        string
-		expectError    bool
-		errorMsg       string
-		expectedConfig *ObjectLockConfiguration
-	}{
-		{
-			name: "Valid configuration with days",
-			xmlBody: `<?xml version="1.0" encoding="UTF-8"?>
-<ObjectLockConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
-    <ObjectLockEnabled>Enabled</ObjectLockEnabled>
-    <Rule>
-        <DefaultRetention>
-            <Mode>GOVERNANCE</Mode>
-            <Days>30</Days>
-        </DefaultRetention>
-    </Rule>
-</ObjectLockConfiguration>`,
-			expectError: false,
-			expectedConfig: &ObjectLockConfiguration{
-				ObjectLockEnabled: s3_constants.ObjectLockEnabled,
-				Rule: &ObjectLockRule{
-					DefaultRetention: &DefaultRetention{
-						Mode: s3_constants.RetentionModeGovernance,
-						Days: 30,
-					},
-				},
-			},
-		},
-		{
-			name: "Valid configuration with years",
-			xmlBody: `<?xml version="1.0" encoding="UTF-8"?>
-<ObjectLockConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
-    <ObjectLockEnabled>Enabled</ObjectLockEnabled>
-    <Rule>
-        <DefaultRetention>
-            <Mode>COMPLIANCE</Mode>
-            <Years>1</Years>
-        </DefaultRetention>
-    </Rule>
-</ObjectLockConfiguration>`,
-			expectError: false,
-			expectedConfig: &ObjectLockConfiguration{
-				ObjectLockEnabled: s3_constants.ObjectLockEnabled,
-				Rule: &ObjectLockRule{
-					DefaultRetention: &DefaultRetention{
-						Mode:  s3_constants.RetentionModeCompliance,
-						Years: 1,
-					},
-				},
-			},
-		},
-		{
-			name: "Configuration with ObjectLockEnabled only",
-			xmlBody: `<?xml version="1.0" encoding="UTF-8"?>
-<ObjectLockConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
-    <ObjectLockEnabled>Enabled</ObjectLockEnabled>
-</ObjectLockConfiguration>`,
-			expectError: false,
-			expectedConfig: &ObjectLockConfiguration{
-				ObjectLockEnabled: s3_constants.ObjectLockEnabled,
-			},
-		},
-		{
-			name:        "Empty body",
-			xmlBody:     "",
-			expectError: true,
-			errorMsg:    "empty request body",
-		},
-		{
-			name:        "Invalid XML",
-			xmlBody:     "<InvalidXML>",
-			expectError: true,
-			errorMsg:    "error parsing XML",
-		},
-		{
-			name: "Malformed XML structure",
-			xmlBody: `<?xml version="1.0" encoding="UTF-8"?>
-<WrongRootElement>
-    <SomeData>Invalid</SomeData>
-</WrongRootElement>`,
-			expectError: true,
-			errorMsg:    "error parsing XML",
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			var req *http.Request
-			if tt.xmlBody == "" {
-				req = &http.Request{Body: nil}
-			} else {
-				req = &http.Request{
-					Body: io.NopCloser(strings.NewReader(tt.xmlBody)),
-				}
-			}
-
-			config, err := parseObjectLockConfiguration(req)
-
-			if tt.expectError {
-				if err == nil {
-					t.Errorf("Expected error but got none")
-				} else if !strings.Contains(err.Error(), tt.errorMsg) {
-					t.Errorf("Expected error message to contain '%s', got '%s'", tt.errorMsg, err.Error())
-				}
-			} else {
-				if err != nil {
-					t.Errorf("Expected no error but got: %v", err)
-				}
-				if config == nil {
-					t.Errorf("Expected config but got nil")
-				}
-				if tt.expectedConfig != nil && config != nil {
-					if config.ObjectLockEnabled != tt.expectedConfig.ObjectLockEnabled {
-						t.Errorf("Expected ObjectLockEnabled '%s', got '%s'", tt.expectedConfig.ObjectLockEnabled, config.ObjectLockEnabled)
-					}
-					if (config.Rule == nil) != (tt.expectedConfig.Rule == nil) {
-						t.Errorf("Rule presence mismatch")
-					}
-					if config.Rule != nil && tt.expectedConfig.Rule != nil {
-						if (config.Rule.DefaultRetention == nil) != (tt.expectedConfig.Rule.DefaultRetention == nil) {
-							t.Errorf("DefaultRetention presence mismatch")
-						}
-						if config.Rule.DefaultRetention != nil && tt.expectedConfig.Rule.DefaultRetention != nil {
-							if config.Rule.DefaultRetention.Mode != tt.expectedConfig.Rule.DefaultRetention.Mode {
-								t.Errorf("Expected Mode '%s', got '%s'", tt.expectedConfig.Rule.DefaultRetention.Mode, config.Rule.DefaultRetention.Mode)
-							}
-							if config.Rule.DefaultRetention.Days != tt.expectedConfig.Rule.DefaultRetention.Days {
-								t.Errorf("Expected Days %d, got %d", tt.expectedConfig.Rule.DefaultRetention.Days, config.Rule.DefaultRetention.Days)
-							}
-							if config.Rule.DefaultRetention.Years != tt.expectedConfig.Rule.DefaultRetention.Years {
-								t.Errorf("Expected Years %d, got %d", tt.expectedConfig.Rule.DefaultRetention.Years, config.Rule.DefaultRetention.Years)
-							}
-						}
-					}
-				}
-			}
-		})
-	}
-}
-
-func TestParseXMLGeneric(t *testing.T) {
-	tests := []struct {
-		name        string
-		xmlBody     string
-		expectError bool
-		errorMsg    string
-	}{
-		{
-			name: "Valid retention XML",
-			xmlBody: `<?xml version="1.0" encoding="UTF-8"?>
-<Retention xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
-    <Mode>GOVERNANCE</Mode>
-    <RetainUntilDate>2025-01-01T00:00:00Z</RetainUntilDate>
-</Retention>`,
-			expectError: false,
-		},
-		{
-			name:        "Empty body",
-			xmlBody:     "",
-			expectError: true,
-			errorMsg:    "error parsing XML",
-		},
-		{
-			name:        "Invalid XML",
-			xmlBody:     "not xml",
-			expectError: true,
-			errorMsg:    "error parsing XML",
+func TestPutObjectRetention(t *testing.T) {
+	// Create a new S3ApiServer for testing
+	s3a := &S3ApiServer{
+		option: &S3ApiServerOption{
+			BucketsPath: "/tmp/buckets",
 		},
 	}
 
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			req := &http.Request{
-				Body: io.NopCloser(strings.NewReader(tt.xmlBody)),
-			}
-
-			var retention ObjectRetention
-			err := parseXML(req, &retention)
-
-			if tt.expectError {
-				if err == nil {
-					t.Errorf("Expected error but got none")
-				} else if !strings.Contains(err.Error(), tt.errorMsg) {
-					t.Errorf("Expected error message to contain '%s', got: %v", tt.errorMsg, err)
-				}
-			} else {
-				if err != nil {
-					t.Errorf("Unexpected error: %v", err)
-				}
-			}
-		})
+	// Create a test request with a valid retention configuration
+	retention := ObjectRetention{
+		Mode:            s3_constants.RetentionModeCompliance,
+		RetainUntilDate: &time.Time{},
 	}
-}
+	xmlData, _ := xml.Marshal(retention)
+	req := httptest.NewRequest(http.MethodPut, "/bucket/object?retention", bytes.NewReader(xmlData))
+	req.Header.Set("Content-Type", "application/xml")
 
-func TestValidateObjectLockConfiguration(t *testing.T) {
-	tests := []struct {
-		name        string
-		config      *ObjectLockConfiguration
-		expectError bool
-		errorMsg    string
-	}{
-		{
-			name: "Valid config with ObjectLockEnabled only",
-			config: &ObjectLockConfiguration{
-				ObjectLockEnabled: "Enabled",
-			},
-			expectError: false,
-		},
-		{
-			name: "Valid config with rule and days",
-			config: &ObjectLockConfiguration{
-				ObjectLockEnabled: "Enabled",
-				Rule: &ObjectLockRule{
-					DefaultRetention: &DefaultRetention{
-						Mode: "GOVERNANCE",
-						Days: 30,
-					},
-				},
-			},
-			expectError: false,
-		},
-		{
-			name: "Valid config with rule and years",
-			config: &ObjectLockConfiguration{
-				ObjectLockEnabled: "Enabled",
-				Rule: &ObjectLockRule{
-					DefaultRetention: &DefaultRetention{
-						Mode:  "COMPLIANCE",
-						Years: 1,
-					},
-				},
-			},
-			expectError: false,
-		},
-		{
-			name: "Invalid ObjectLockEnabled value",
-			config: &ObjectLockConfiguration{
-				ObjectLockEnabled: "InvalidValue",
-			},
-			expectError: true,
-			errorMsg:    "invalid object lock enabled value",
-		},
-		{
-			name: "Invalid rule - missing mode",
-			config: &ObjectLockConfiguration{
-				ObjectLockEnabled: "Enabled",
-				Rule: &ObjectLockRule{
-					DefaultRetention: &DefaultRetention{
-						Days: 30,
-					},
-				},
-			},
-			expectError: true,
-			errorMsg:    "default retention must specify Mode",
-		},
-		{
-			name: "Invalid rule - both days and years",
-			config: &ObjectLockConfiguration{
-				ObjectLockEnabled: "Enabled",
-				Rule: &ObjectLockRule{
-					DefaultRetention: &DefaultRetention{
-						Mode:  "GOVERNANCE",
-						Days:  30,
-						Years: 1,
-					},
-				},
-			},
-			expectError: true,
-			errorMsg:    "default retention cannot specify both Days and Years",
-		},
-		{
-			name: "Invalid rule - neither days nor years",
-			config: &ObjectLockConfiguration{
-				ObjectLockEnabled: "Enabled",
-				Rule: &ObjectLockRule{
-					DefaultRetention: &DefaultRetention{
-						Mode: "GOVERNANCE",
-					},
-				},
-			},
-			expectError: true,
-			errorMsg:    "default retention must specify either Days or Years",
-		},
-		{
-			name: "Invalid rule - invalid mode",
-			config: &ObjectLockConfiguration{
-				ObjectLockEnabled: "Enabled",
-				Rule: &ObjectLockRule{
-					DefaultRetention: &DefaultRetention{
-						Mode: "INVALID_MODE",
-						Days: 30,
-					},
-				},
-			},
-			expectError: true,
-			errorMsg:    "invalid default retention mode",
-		},
-		{
-			name: "Invalid rule - days out of range",
-			config: &ObjectLockConfiguration{
-				ObjectLockEnabled: "Enabled",
-				Rule: &ObjectLockRule{
-					DefaultRetention: &DefaultRetention{
-						Mode: "GOVERNANCE",
-						Days: 50000,
-					},
-				},
-			},
-			expectError: true,
-			errorMsg:    "default retention days must be between 0 and 36500",
-		},
-		{
-			name: "Invalid rule - years out of range",
-			config: &ObjectLockConfiguration{
-				ObjectLockEnabled: "Enabled",
-				Rule: &ObjectLockRule{
-					DefaultRetention: &DefaultRetention{
-						Mode:  "GOVERNANCE",
-						Years: 200,
-					},
-				},
-			},
-			expectError: true,
-			errorMsg:    "default retention years must be between 0 and 100",
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			err := validateObjectLockConfiguration(tt.config)
-
-			if tt.expectError {
-				if err == nil {
-					t.Errorf("Expected error but got none")
-				} else if !strings.Contains(err.Error(), tt.errorMsg) {
-					t.Errorf("Expected error message to contain '%s', got: %v", tt.errorMsg, err)
-				}
-			} else {
-				if err != nil {
-					t.Errorf("Unexpected error: %v", err)
-				}
-			}
-		})
-	}
-}
-
-func TestValidateDefaultRetention(t *testing.T) {
-	tests := []struct {
-		name        string
-		retention   *DefaultRetention
-		expectError bool
-		errorMsg    string
-	}{
-		{
-			name: "Valid retention with days",
-			retention: &DefaultRetention{
-				Mode: "GOVERNANCE",
-				Days: 30,
-			},
-			expectError: false,
-		},
-		{
-			name: "Valid retention with years",
-			retention: &DefaultRetention{
-				Mode:  "COMPLIANCE",
-				Years: 1,
-			},
-			expectError: false,
-		},
-		{
-			name: "Missing mode",
-			retention: &DefaultRetention{
-				Days: 30,
-			},
-			expectError: true,
-			errorMsg:    "default retention must specify Mode",
-		},
-		{
-			name: "Invalid mode",
-			retention: &DefaultRetention{
-				Mode: "INVALID",
-				Days: 30,
-			},
-			expectError: true,
-			errorMsg:    "invalid default retention mode",
-		},
-		{
-			name: "Both days and years specified",
-			retention: &DefaultRetention{
-				Mode:  "GOVERNANCE",
-				Days:  30,
-				Years: 1,
-			},
-			expectError: true,
-			errorMsg:    "default retention cannot specify both Days and Years",
-		},
-		{
-			name: "Neither days nor years specified",
-			retention: &DefaultRetention{
-				Mode: "GOVERNANCE",
-			},
-			expectError: true,
-			errorMsg:    "default retention must specify either Days or Years",
-		},
-	}
+	// Create a test response recorder
+	rr := httptest.NewRecorder()
 
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			err := validateDefaultRetention(tt.retention)
+	// Call the handler
+	s3a.PutObjectRetentionHandler(rr, req)
 
-			if tt.expectError {
-				if err == nil {
-					t.Errorf("Expected error but got none")
-				} else if !strings.Contains(err.Error(), tt.errorMsg) {
-					t.Errorf("Expected error message to contain '%s', got: %v", tt.errorMsg, err)
-				}
-			} else {
-				if err != nil {
-					t.Errorf("Unexpected error: %v", err)
-				}
-			}
-		})
+	// Check the response status code
+	if status := rr.Code; status != http.StatusOK {
+		t.Errorf("handler returned wrong status code: got %v want %v",
+			status, http.StatusOK)
 	}
-}
+}
\ No newline at end of file