Error: DynamoDB Expression Not Null
Answered by Rafal Wilinski
What's Causing This Error
Update expressions and condition expressions are used by the update and delete operations of DynamoDB to determine which items are to be deleted or updated and how to update them. When the operation's expression attribute values are left undefined (null) when you are trying to update or delete an item, this error occurs as a result.
Solution: Here's How To Resolve It
To resolve this error, ensure that you provide not null values for every expression attribute value that is used in operation. You can either manually specify the values in the delete or update request or set the values before the operation execution by using the AWS SDK. You can also utilize if_exists or if_not_exists functions in the condition expression or the update expression to update or delete an item based on the attribute's existence.
Other Common DynamoDB Errors (with Solutions)
- dynamodb item size limit error
- dynamodb-admin command not found
- DynamoDB Invalid UpdateExpression Syntax Error Token
- dynamodb getItem() is not a function
- DynamoDB ValidationException: Query condition missed key schema element
- aws.dynamodb.documentclient is not a constructor
- an expression attribute name used in the document path is not defined
- could not connect to the endpoint URL dynamodb
- dynamodb connection timeout
- cognitoidentitycredentials is not authorized to perform dynamodb describetable
- DynamoDB BatchWriteItem error
- DynamoDB Errors InvalidSignatureException Signature Expired
- aws lambda dynamodb nodejs not working after few puts
- a bytes-like object is required not binary dynamodb
- dynamodb-admin is not recognized as an internal or external command