Error: DynamoDB string set may not be empty

Rafal Wilinski

Answered by Rafal Wilinski

What's Causing This Error

This error is caused when an empty set is passed as a value for a String Set data type attribute in a DynamoDB table. In DynamoDB, a set must have at least one element and cannot be empty.

Solution: Here's How To Resolve It

To solve this error, you can take the following steps:

  • Ensure that the set is passed as a value for the attribute is not empty and contains at least one element.
  • When creating a new item, you can check if the set is empty and then add an element to it before sending the request to the DynamoDB service.
  • If you're using the AWS SDK, you can check the documentation of the SDK to see if there is any helper function to check if a set is empty.
  • If the issue persists, you may contact AWS support for further assistance.
  • Additionally, you can use CloudWatch logs to check the logs and troubleshoot the issue.
  • It is important to validate the data types of the items you want to put in the DynamoDB table according to the attribute schema in the table to avoid such issues.

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