CODEWITHSUNDEEP
amazon-web-servicesaws-cloudformation
Diego Duarte
Diego Duarte

Reputation: 139

CloudFormation Template for dynamoDB won't work: One or more parameters were invalid

I'm trying to build a template for each of my tables and I'm testing it with one table. However, I'm getting this error and I have no idea on how to fix it: One or more parameter values were invalid: Number of attributes in KeySchema does not exactly match number of attributes defined in AttributeDefinitions (Service: AmazonDynamoDBv2; Status Code: 400; Error Code: ValidationException; Request ID: NRTF448TGFEUGUB3H5UH37AGHBVV4KQNSO5AEMVJF66Q9ASUAAJG; Proxy: null)

The template that I'm using is this one:

{
    "AWSTemplateFormatVersion" : "2010-09-09",
    "Resources" : {
      "myddbtable": {
      "Type" : "AWS::DynamoDB::Table",
      "Properties" : {
        "AttributeDefinitions" : [ 
          {
            "AttributeName": "phoneNumber",
            "AttributeType": "S" 
          },
          {
            "AttributeName": "fname",
            "AttributeType": "S" 
          },
          {
            "AttributeName": "lname",
            "AttributeType": "S" 
          }
          ],
        "BillingMode" : "PAY_PER_REQUEST",
        "KeySchema" : [
          {
            "AttributeName" : "phoneNumber",
            "KeyType": "HASH"
          }
        ],
        "TableName" : "UserTable2"
      }
    }
  }
}

I tried putting the fname and the lname attributes on the KeySchema section with a KeyType of Range and it didn't work either, any ideas?

Upvotes: 1

Views: 776

Answers (1)

Balu Vyamajala
Balu Vyamajala

Reputation: 10333

As DynamoDB is schema less, we can add any attributes when creating/updating individual records. Hence when creating DynamoDB tables, we only need to define attributes which are part of primary index or global secondary index.

In this case, table has only primary key of phoneNumber. We need to remove two other attributes fname and 'lname` from definition

{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Resources": {
    "myddbtable": {
      "Type": "AWS::DynamoDB::Table",
      "Properties": {
        "AttributeDefinitions": [
          {
            "AttributeName": "phoneNumber",
            "AttributeType": "S"
          }
        ],
        "BillingMode": "PAY_PER_REQUEST",
        "KeySchema": [
          {
            "AttributeName": "phoneNumber",
            "KeyType": "HASH"
          }
        ],
        "TableName": "UserTable2"
      }
    }
  }
}

Upvotes: 3

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