Error: dynamodb cannot read properties of undefined (reading 'bytelength')

Answered by Rafal Wilinski
What's Causing This Error
The error can occur due to several reasons in the AWS JS SDK. However, one known cause for this error is that keys in the credentials object are spelled in PascalCase, instead of camelCase.
Solution: Here's How To Resolve It
To solve this error, ensure that your credentials object is correctly configured in the JS SDK and is defined using camelCase.
Other Common DynamoDB Errors (with Solutions)
- boto3 dynamodb client error
- dynamodb condition does not exist
- dynamodb global secondary index does not project
- DynamoDB is missing the key id in the item
- dynamodb item size limit error
- dynamodb problem function call failed
- DynamoDB scan filter not working
- dynamodb localhost error
- dynamodb index not found
- dynamodb no range key value present
- dynamodb put fail if exists
- does not support attribute type arn aws dynamodb
- dynamodb throttle error code
- DynamoDB aliasing is not supported
- could not transform a dynamodb amazonserviceexception to a compatible kinesis exception
Login to the AWS Console less. Use Dynobase.
Try 7-day free trial. No strings attached.
Product Features
DynamoDB Tools
DynamoDB Info
© 2025 Dynobase