anchor.diff:  
       %% it is not possible to create bucket with duplicate name
       {_OK2, E2} = basic_bucket_params_screening(true, "mcd",
  -                                              [{"bucketType", "membase"},
  -                                               {"authType", "sasl"}, {"saslPassword", ""},
  -                                               {"ramQuotaMB", "400"}, {"replicaNumber", "2"}],
  -                                              AllBuckets),
  +                                               [{"bucketType", "membase"},
  +                                                {"authType", "sasl"}, {"saslPassword", ""},
  +                                                {"ramQuotaMB", "400"}, {"replicaNumber", "2"}],
  +                                               AllBuckets),
       true = lists:member(name, proplists:get_keys(E2)), % mcd is already present
   
       %% it is not possible to update missing bucket. And specific format of errors
  
positive.code: 
      case do_bucket_create(Name, Params, Ctx) of
          ok ->
             respond_bucket_created(Req, PoolId, Name);
          {Struct, Code} ->
             reply_json(Req, Struct, Code)
      end.
  
  perform_warnings_validation(Ctx, ParsedProps, Errors) ->
  
negative.code: 
      %% it is not possible to create bucket with duplicate name in different register
      {_OK10, E10} = basic_bucket_params_screening(true, "Mcd",
                                                   [{"bucketType", "membase"},
                                                    {"authType", "sasl"}, {"saslPassword", ""},
                                                    {"ramQuotaMB", "400"}, {"replicaNumber", "2"}],
                                                   AllBuckets),
      ?assertEqual([{name, <<"Bucket with given name already exists">>}], E10),
  
      %% it is not possible to create bucket with name longer than 100 characters
      {_OK11, E11} = basic_bucket_params_screening(true, "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901",
                                                   [{"bucketType", "membase"},
                                                    {"authType", "sasl"}, {"saslPassword", ""},
                                                    {"ramQuotaMB", "400"}, {"replicaNumber", "2"}],
                                                   AllBuckets),
      ?assertEqual([{name, ?l2b(io_lib:format("Bucket name cannot exceed ~p characters",
                                              [?MAX_BUCKET_NAME_LEN]))}], E11),
  
  