Error: DynamoDB Invalid UpdateExpression Syntax Error Token
Answered by Rafal Wilinski
Solution
The 'UpdateExpression' parameter you're using in your request is incorrect and could not be parsed.
Troubleshooting steps:
- Make sure you're not using one of the reserved keywords.. Use 'ExpressionAttributeNames' to replace conflicting attribute names with proxies.
- Make sure that none of your attribute names begins with underscore (_), it cannot be the first character.
- Use libraries like dynoexpr which might prevent creating silly mistakes in UpdateExpressions.
Other Common DynamoDB Errors (with Solutions)
- DynamoDB Key element does not match the schema
- DynamoDB Errors InvalidSignatureException Signature Expired
- dynamodb index not found
- Error ValidationException: One or more parameter values were invalid: Type mismatch for key X expected: S actual: M
- boto3 dynamodb unable to locate credentials
- AWS DynamoDB CredentialsError: Missing credentials in config
- dynamodb list_append returns true but does not work
- 'dynamodb' object has no attribute 'table'
- DynamoDB Local Cannot Create Preexisting Table
- failed to begin subsegment named 'amazondynamodbv2': segment cannot be found.
- DynamoDB Error Message KeyError item is not JSON serializable
- DynamoDB Query Limit Not Working
- KMS Key Access Denied Error DynamoDB
- could not unmarshal the value dynamodb
- dynamodb cannot create preexisting table
Tired of AWS Console? Try Dynobase.
First 7 days are on us. No strings attached.
Product Features
DynamoDB Tools
DynamoDB Info
© 2025 Dynobase