diff --git a/coordinator/coordinatorproto/coordinator.pb.go b/coordinator/coordinatorproto/coordinator.pb.go
index e496a358..1ac60600 100644
--- a/coordinator/coordinatorproto/coordinator.pb.go
+++ b/coordinator/coordinatorproto/coordinator.pb.go
@@ -35,6 +35,7 @@ const (
 	ErrorCodes_Forbidden            ErrorCodes = 7
 	ErrorCodes_AclHeadIsMissing     ErrorCodes = 8
 	ErrorCodes_AclNonEmpty          ErrorCodes = 9
+	ErrorCodes_SpaceNotShareable    ErrorCodes = 10
 	ErrorCodes_ErrorOffset          ErrorCodes = 300
 )
 
@@ -49,6 +50,7 @@ var ErrorCodes_name = map[int32]string{
 	7:   "Forbidden",
 	8:   "AclHeadIsMissing",
 	9:   "AclNonEmpty",
+	10:  "SpaceNotShareable",
 	300: "ErrorOffset",
 }
 
@@ -63,6 +65,7 @@ var ErrorCodes_value = map[string]int32{
 	"Forbidden":            7,
 	"AclHeadIsMissing":     8,
 	"AclNonEmpty":          9,
+	"SpaceNotShareable":    10,
 	"ErrorOffset":          300,
 }
 
@@ -2332,124 +2335,124 @@ func init() {
 }
 
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+	0xfd, 0x5e, 0x4a, 0x63, 0x5e, 0x77, 0xf9, 0x12, 0x16, 0x13, 0x15, 0x1c, 0x5d, 0x4e, 0x6c, 0xc9,
+	0xeb, 0x22, 0x6b, 0xe6, 0x34, 0x11, 0xa9, 0x97, 0xc4, 0x1d, 0x57, 0xb2, 0x09, 0x42, 0xd7, 0xf3,
+	0x36, 0xe7, 0x36, 0x52, 0xb5, 0xe6, 0x69, 0x44, 0xa5, 0xbd, 0x0e, 0x2c, 0xa8, 0x8d, 0x10, 0x5a,
+	0x4f, 0xed, 0xcd, 0xb4, 0x5b, 0xb5, 0xcb, 0x53, 0x24, 0x54, 0x70, 0x94, 0x1e, 0x26, 0x03, 0x4e,
+	0xb6, 0x57, 0xca, 0x80, 0x93, 0xd7, 0x02, 0xbd, 0xe6, 0x6f, 0x62, 0xf2, 0x69, 0x4f, 0xd5, 0xa2,
+	0x09, 0x6d, 0x50, 0xaa, 0x16, 0x4d, 0xea, 0x0f, 0x1e, 0xfc, 0xe9, 0xc7, 0x0f, 0x0d, 0xed, 0xdd,
+	0x87, 0x86, 0xf6, 0xfe, 0x43, 0x43, 0xfb, 0xdf, 0xc7, 0x46, 0xe1, 0xdd, 0xc7, 0x46, 0xe1, 0xa7,
+	0x8f, 0x8d, 0xc2, 0x3f, 0xeb, 0xd3, 0xfe, 0x05, 0xb0, 0x3f, 0x27, 0x7e, 0xdd, 0xfe, 0x25, 0x00,
+	0x00, 0xff, 0xff, 0xc7, 0x84, 0xe0, 0x45, 0x29, 0x18, 0x00, 0x00,
 }
 
 func (m *SpaceSignRequest) Marshal() (dAtA []byte, err error) {
diff --git a/coordinator/coordinatorproto/errors.go b/coordinator/coordinatorproto/errors.go
index ccf3397f..713dd0cc 100644
--- a/coordinator/coordinatorproto/errors.go
+++ b/coordinator/coordinatorproto/errors.go
@@ -19,4 +19,5 @@ var (
 	ErrForbidden            = errGroup.Register(errors.New("forbidden"), uint64(ErrorCodes_Forbidden))
 	ErrAclHeadIsMissing     = errGroup.Register(errors.New("acl head is missing"), uint64(ErrorCodes_AclHeadIsMissing))
 	ErrAclNonEmpty          = errGroup.Register(errors.New("acl is not empty"), uint64(ErrorCodes_AclNonEmpty))
+	ErrSpaceNotShareable    = errGroup.Register(errors.New("space not shareable"), uint64(ErrorCodes_SpaceNotShareable))
 )
diff --git a/coordinator/coordinatorproto/protos/coordinator.proto b/coordinator/coordinatorproto/protos/coordinator.proto
index 32ff3ee2..a4c5bbc6 100644
--- a/coordinator/coordinatorproto/protos/coordinator.proto
+++ b/coordinator/coordinatorproto/protos/coordinator.proto
@@ -69,6 +69,7 @@ enum ErrorCodes {
   Forbidden = 7;
   AclHeadIsMissing = 8;
   AclNonEmpty = 9;
+  SpaceNotShareable = 10;
   ErrorOffset = 300;
 }