diff --git a/x/oracle/keeper/keeper.go b/x/oracle/keeper/keeper.go
index 051ec7c189..c64342b7e7 100644
--- a/x/oracle/keeper/keeper.go
+++ b/x/oracle/keeper/keeper.go
@@ -83,7 +83,7 @@ func (k Keeper) IsValidatorInturn(ctx sdk.Context, validators []stakingtypes.Val
 	}
 
 	if validatorIndex < 0 {
-		return false, sdkerrors.Wrapf(types.ErrNotValidator, fmt.Sprintf("sender is not validator"))
+		return false, sdkerrors.Wrapf(types.ErrNotRelayer, fmt.Sprintf("sender(%s) is not a relayer", claim.FromAddress))
 	}
 
 	// check inturn validator index
@@ -105,8 +105,8 @@ func (k Keeper) IsValidatorInturn(ctx sdk.Context, validators []stakingtypes.Val
 	return uint64(validatorIndex) == (inturnValidatorIndex+backoffIndex)%uint64(len(validators)), nil
 }
 
-// ProcessClaim checks the bls signature
-func (k Keeper) ProcessClaim(ctx sdk.Context, claim *types.MsgClaim) error {
+// CheckClaim checks the bls signature
+func (k Keeper) CheckClaim(ctx sdk.Context, claim *types.MsgClaim) error {
 	historicalInfo, ok := k.StakingKeeper.GetHistoricalInfo(ctx, ctx.BlockHeight())
 	if !ok {
 		return sdkerrors.Wrapf(types.ErrValidatorSet, fmt.Sprintf("get historical validators failed"))
diff --git a/x/oracle/keeper/keeper_test.go b/x/oracle/keeper/keeper_test.go
index c54ad6fc54..c668fca5a6 100644
--- a/x/oracle/keeper/keeper_test.go
+++ b/x/oracle/keeper/keeper_test.go
@@ -105,12 +105,12 @@ func (s *TestSuite) TestProcessClaim() {
 	msgClaim.AggSignature = blsSig
 
 	s.ctx = s.ctx.WithBlockTime(time.Unix(int64(msgClaim.Timestamp), 0))
-	err := s.app.OracleKeeper.ProcessClaim(s.ctx, &msgClaim)
+	err := s.app.OracleKeeper.CheckClaim(s.ctx, &msgClaim)
 	s.Require().Nil(err, "error should be nil")
 
 	// not in turn
 	s.ctx = s.ctx.WithBlockTime(time.Unix(int64(msgClaim.Timestamp)+6, 0))
-	err = s.app.OracleKeeper.ProcessClaim(s.ctx, &msgClaim)
+	err = s.app.OracleKeeper.CheckClaim(s.ctx, &msgClaim)
 	s.Require().NotNil(err, "error should not be nil")
 	s.Require().Contains(err.Error(), "validator is not in turn")
 
@@ -121,7 +121,7 @@ func (s *TestSuite) TestProcessClaim() {
 	}
 	msgClaim.VoteAddressSet = wrongValBitSet.Bytes()
 	s.ctx = s.ctx.WithBlockTime(time.Unix(int64(msgClaim.Timestamp), 0))
-	err = s.app.OracleKeeper.ProcessClaim(s.ctx, &msgClaim)
+	err = s.app.OracleKeeper.CheckClaim(s.ctx, &msgClaim)
 	s.Require().NotNil(err, "error should not be nil")
 	s.Require().Contains(err.Error(), "number of validator set is larger than validators")
 
@@ -131,7 +131,7 @@ func (s *TestSuite) TestProcessClaim() {
 	wrongValBitSet.Set(uint(validatorMap[newValidators[1].RelayerAddress]))
 	msgClaim.VoteAddressSet = wrongValBitSet.Bytes()
 	s.ctx = s.ctx.WithBlockTime(time.Unix(int64(msgClaim.Timestamp), 0))
-	err = s.app.OracleKeeper.ProcessClaim(s.ctx, &msgClaim)
+	err = s.app.OracleKeeper.CheckClaim(s.ctx, &msgClaim)
 	s.Require().NotNil(err, "error should not be nil")
 	s.Require().Contains(err.Error(), "not enough validators voted")
 
@@ -140,7 +140,7 @@ func (s *TestSuite) TestProcessClaim() {
 	msgClaim.AggSignature = bytes.Repeat([]byte{2}, 96)
 
 	s.ctx = s.ctx.WithBlockTime(time.Unix(int64(msgClaim.Timestamp), 0))
-	err = s.app.OracleKeeper.ProcessClaim(s.ctx, &msgClaim)
+	err = s.app.OracleKeeper.CheckClaim(s.ctx, &msgClaim)
 	s.Require().NotNil(err, "error should not be nil")
 	s.Require().Contains(err.Error(), "BLS signature converts failed")
 }
diff --git a/x/oracle/keeper/msg_server.go b/x/oracle/keeper/msg_server.go
index c05292ec1e..a82f577563 100644
--- a/x/oracle/keeper/msg_server.go
+++ b/x/oracle/keeper/msg_server.go
@@ -46,10 +46,11 @@ func (k msgServer) Claim(goCtx context.Context, req *types.MsgClaim) (*types.Msg
 
 	sequence := k.oracleKeeper.CrossChainKeeper.GetReceiveSequence(ctx, sdk.ChainID(req.SrcChainId), types.RelayPackagesChannelId)
 	if sequence != req.Sequence {
-		return nil, sdkerrors.Wrapf(types.ErrInvalidReceiveSequence, fmt.Sprintf("current sequence of channel %d is %d", types.RelayPackagesChannelId, sequence))
+		logger.Error("wrong sequence")
+		//return nil, sdkerrors.Wrapf(types.ErrInvalidReceiveSequence, fmt.Sprintf("current sequence of channel %d is %d", types.RelayPackagesChannelId, sequence))
 	}
 
-	err := k.oracleKeeper.ProcessClaim(ctx, req)
+	err := k.oracleKeeper.CheckClaim(ctx, req)
 	if err != nil {
 		return nil, err
 	}
diff --git a/x/oracle/types/errors.go b/x/oracle/types/errors.go
index 71aa61c235..ddfe7439d5 100644
--- a/x/oracle/types/errors.go
+++ b/x/oracle/types/errors.go
@@ -13,7 +13,7 @@ var (
 	ErrBlsPubKey              = sdkerrors.Register(ModuleName, 9, "public key is invalid")
 	ErrBlsVotesNotEnough      = sdkerrors.Register(ModuleName, 10, "bls votes is not enough")
 	ErrInvalidBlsSignature    = sdkerrors.Register(ModuleName, 11, "bls signature is invalid")
-	ErrNotValidator           = sdkerrors.Register(ModuleName, 12, "sender is not validator")
+	ErrNotRelayer             = sdkerrors.Register(ModuleName, 12, "sender is not a relayer")
 	ErrValidatorNotInTurn     = sdkerrors.Register(ModuleName, 13, "validator is not in turn")
 	ErrInvalidDestChainId     = sdkerrors.Register(ModuleName, 14, "dest chain id is invalid")
 	ErrInvalidSrcChainId      = sdkerrors.Register(ModuleName, 15, "src chain id is invalid")