Error: accessdeniedexception dynamodb
Answered by Rafal Wilinski
What's Causing This Error
You may encounter this error if the service trying to access a DynamoDB resource does not have the required permissions. For example, if a Lambda function does not have the DynamoDB policy attached to its IAM role, the Lambda function will not be able to access any DynamoDB resource.
Solution - Here's How To Resolve It
To resolve the error, attach the required policy (use an AWS-managed or customer-managed policy) to the IAM role assigned to the service.
For example, you can add the IAM Policy statement below to allow a Lambda function to perform only the "query" and "update" operations for all tables. Without adding this policy, the Lambda function cannot access any DynamoDB resource (default nature).
{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Action": [ "dynamodb:Query", "dynamodb:UpdateItem" ], "Resource": "*" } ] }
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