diff --git a/weed/s3api/object_lock_utils.go b/weed/s3api/object_lock_utils.go
index 771004e24..e16ee4dc9 100644
--- a/weed/s3api/object_lock_utils.go
+++ b/weed/s3api/object_lock_utils.go
@@ -4,7 +4,6 @@ import (
 	"encoding/xml"
 	"fmt"
 	"strconv"
-	"strings"
 
 	"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
 	"github.com/seaweedfs/seaweedfs/weed/s3api/s3_constants"
@@ -218,41 +217,16 @@ func ValidateObjectLockParameters(enabled bool, mode string, duration int32) err
 	}
 
 	if mode != s3_constants.RetentionModeGovernance && mode != s3_constants.RetentionModeCompliance {
-		return fmt.Errorf("invalid object lock mode: %s, must be GOVERNANCE or COMPLIANCE", mode)
+		return fmt.Errorf("invalid object lock mode: %s, must be %s or %s", mode, s3_constants.RetentionModeGovernance, s3_constants.RetentionModeCompliance)
 	}
 
 	if duration <= 0 {
-		return fmt.Errorf("object lock duration must be greater than 0 days")
+		return fmt.Errorf("object lock duration must be greater than 0 days, got: %d", duration)
 	}
 
 	if duration > MaxRetentionDays {
-		return fmt.Errorf("object lock duration exceeds maximum allowed days: %d", MaxRetentionDays)
+		return fmt.Errorf("object lock duration exceeds maximum allowed days: %d, got: %d", MaxRetentionDays, duration)
 	}
 
 	return nil
 }
-
-// SimpleXMLParseObjectLockMode extracts mode from XML string using simple string parsing
-// This is used as a fallback when full XML parsing is not needed
-func SimpleXMLParseObjectLockMode(xmlStr string) string {
-	if strings.Contains(xmlStr, "<Mode>GOVERNANCE</Mode>") {
-		return "GOVERNANCE"
-	} else if strings.Contains(xmlStr, "<Mode>COMPLIANCE</Mode>") {
-		return "COMPLIANCE"
-	}
-	return ""
-}
-
-// SimpleXMLParseObjectLockDays extracts days from XML string using simple string parsing
-// This is used as a fallback when full XML parsing is not needed
-func SimpleXMLParseObjectLockDays(xmlStr string) int32 {
-	if daysStart := strings.Index(xmlStr, "<Days>"); daysStart != -1 {
-		daysStart += 6 // length of "<Days>"
-		if daysEnd := strings.Index(xmlStr[daysStart:], "</Days>"); daysEnd != -1 {
-			if duration, err := strconv.ParseInt(xmlStr[daysStart:daysStart+daysEnd], 10, 32); err == nil {
-				return int32(duration)
-			}
-		}
-	}
-	return 0
-}
diff --git a/weed/s3api/s3api_bucket_config.go b/weed/s3api/s3api_bucket_config.go
index 725ee3596..4f629023d 100644
--- a/weed/s3api/s3api_bucket_config.go
+++ b/weed/s3api/s3api_bucket_config.go
@@ -211,7 +211,7 @@ func (s3a *S3ApiServer) isVersioningEnabled(bucket string) (bool, error) {
 		if errCode == s3err.ErrNoSuchBucket {
 			return false, filer_pb.ErrNotFound
 		}
-		return false, fmt.Errorf("failed to get bucket config: %v", errCode)
+		return false, fmt.Errorf("failed to get bucket config: %s", errCode)
 	}
 
 	return config.Versioning == "Enabled", nil
diff --git a/weed/s3api/s3api_bucket_handlers.go b/weed/s3api/s3api_bucket_handlers.go
index e30f172a7..6e3688f44 100644
--- a/weed/s3api/s3api_bucket_handlers.go
+++ b/weed/s3api/s3api_bucket_handlers.go
@@ -159,7 +159,7 @@ func (s3a *S3ApiServer) PutBucketHandler(w http.ResponseWriter, r *http.Request)
 		})
 
 		if errCode != s3err.ErrNone {
-			glog.Errorf("PutBucketHandler: failed to enable Object Lock for bucket %s: %v", bucket, errCode)
+			glog.Errorf("PutBucketHandler: failed to enable Object Lock for bucket %s: %s", bucket, errCode)
 			s3err.WriteErrorResponse(w, r, errCode)
 			return
 		}
diff --git a/weed/s3api/s3api_bucket_handlers_object_lock_config.go b/weed/s3api/s3api_bucket_handlers_object_lock_config.go
index 712a6a1bf..494f203a4 100644
--- a/weed/s3api/s3api_bucket_handlers_object_lock_config.go
+++ b/weed/s3api/s3api_bucket_handlers_object_lock_config.go
@@ -86,6 +86,10 @@ func (s3a *S3ApiServer) GetObjectLockConfigurationHandler(w http.ResponseWriter,
 		// Write XML response
 		w.Header().Set("Content-Type", "application/xml")
 		w.WriteHeader(http.StatusOK)
+		if _, err := w.Write([]byte(xml.Header)); err != nil {
+			glog.Errorf("GetObjectLockConfigurationHandler: failed to write XML header: %v", err)
+			return
+		}
 		if _, err := w.Write(marshaledXML); err != nil {
 			glog.Errorf("GetObjectLockConfigurationHandler: failed to write config XML: %v", err)
 			return
diff --git a/weed/s3api/s3api_object_handlers_put.go b/weed/s3api/s3api_object_handlers_put.go
index a0f633b3f..e4c966562 100644
--- a/weed/s3api/s3api_object_handlers_put.go
+++ b/weed/s3api/s3api_object_handlers_put.go
@@ -12,7 +12,6 @@ import (
 	"time"
 
 	"github.com/pquerna/cachecontrol/cacheobject"
-
 	"github.com/seaweedfs/seaweedfs/weed/glog"
 	"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
 	"github.com/seaweedfs/seaweedfs/weed/s3api/s3_constants"
@@ -437,7 +436,7 @@ func (s3a *S3ApiServer) applyBucketDefaultRetention(bucket string, entry *filer_
 	// Get bucket configuration (getBucketConfig handles caching internally)
 	bucketConfig, errCode := s3a.getBucketConfig(bucket)
 	if errCode != s3err.ErrNone {
-		return fmt.Errorf("failed to get bucket config: %v", errCode)
+		return fmt.Errorf("failed to get bucket config: %s", errCode)
 	}
 
 	// Check if bucket has cached Object Lock configuration