Что не так в MERGE ?

        ALTER PROCEDURE [dbo].[InsertSettings] 
    @token nvarchar(255),
    @userId INT,
    @objectNumber INT,
    @enablePush INT
 
        .....
 
    MERGE LK_Object_Data WITH (HOLDLOCK) AS target
    USING (SELECT LK_Object_Data.ID_LK, Objects.ID, LK_Fcm_Tokens.ID, LK_Object_Data.enable_push
            FROM LK_Object_Data
            LEFT JOIN Objects ON Objects.Num = @objectNumber AND Objects.ID_AgencyID=1
            LEFT JOIN LK_Fcm_Tokens ON LK_Fcm_Tokens.fcm_token = @token
            WHERE LK_Object_Data.ID_LK=@userId AND 
                LK_Object_Data.ID_Object = Objects.ID AND
                LK_Object_Data.ID_Token = LK_Fcm_Tokens.ID) 
                    AS SOURCE (ID_LK, ID_Object, ID_Token, enable_push)
    ON target.ID_LK = @userId
    WHEN MATCHED AND (target.ID_Object = SOURCE.ID_Object OR target.ID_Token = SOURCE.ID_Token)
        THEN UPDATE
        SET enable_push = @enablePush
    WHEN NOT MATCHED
        THEN INSERT (ID_LK, ID_Object, ID_Token, enable_push)
        VALUES (@userId, SOURCE.ID_Object, SOURCE.ID_Token, @enablePush)    
    OUTPUT $action AS [Операция];

THEN INSERT (ID_LK, ID_Object, ID_Token, enable_push)
VALUES (@userId, SOURCE.ID_Object, SOURCE.ID_Token, @enablePush)

    MERGE LK_Object_Data WITH (HOLDLOCK) AS t
    USING (SELECT @userId, Objects.ID, LK_Fcm_Tokens.ID
            FROM Objects
            LEFT JOIN LK_Fcm_Tokens ON LK_Fcm_Tokens.fcm_token = @token
            WHERE Objects.ID=(SELECT Objects.ID FROM Objects WHERE Objects.Num = @objectNumber AND Objects.ID_AgencyID=1)) 
                    AS s (ID_LK, ID_Object, ID_Token)
    ON t.ID_LK = s.ID_LK AND t.ID_Object = s.ID_Object AND t.ID_Token = s.ID_Token
    WHEN MATCHED
        THEN UPDATE
        SET enable_push = @enablePush
    WHEN NOT MATCHED
        THEN INSERT (ID_LK, ID_Object, ID_Token, enable_push)
        VALUES (@userId, s.ID_Object, s.ID_Token, @enablePush)  
    OUTPUT $action AS [Операция];