Yaml-schema 抛出不正确的错误消息

Question

我收到String is longer than the maximum length of 1.yaml-schema: AWSDynamoDBTableAttributeDefinition 以下代码块的错误

TodosTable:
  Type: AWS::DynamoDB::Table
  Properties:
    TableName: Todos-${self:provider.stage}
    AttributeDefinitions:
      - AttributeName: todoId
        AttributeType: S
      - AttributeName: createdAt
        AttributeType: S
      - AttributeName: name
        AttributeType: S
      - AttributeName: dueDate
        AttributeType: S
    KeySchema:
      - AttributeName: todoId
        KeyType: HASH
      - AttributeName: createdAt
        KeyType: RANGE
    BillingMode: PAY_PER_REQUEST
    StreamSpecification:
      StreamViewType: NEW_IMAGE
    LocalSecondaryIndexes:
      - IndexName: todoNameIndex
        KeySchema:
          - AttributeName: todoId
            KeyType: HASH
          - AttributeName: name
            KeyType: RANGE
        Projection:
          ProjectionType: ALL

解释： yaml 模式似乎将AttributeName与混淆了AttributeType。因为它期望字符串只有一个字符。

这是如何固定的？