Error: could not unmarshal the value dynamodb
What's Causing This Error
The DynamoDB unmarshal
function can only accept an object (with data the structure of DynamoDB). Therefore, if you try to pass an array of these objects into the unmarshal
function, it will throw an error.
Solution: Here's How To Resolve It
To resolve the error, iterate through the array of DynamoDB objects and "unmarshall" each object individually, as shown below.
const items = [ { uId: { S: '123456789' }, date: { S: '09-06-2022' } } ]; const unmarshalled = items.map((i) => aws.dynamodb.converter.unmarshall(i));
Other Common DynamoDB Errors (with Solutions)
- DynamoDB Code Working In Node But Not SAM
- Error retrieving DynamoDB table item validation exception
- dynamodb put function not working
- cannot find module 'dynamodb-doc'
- ValidationException: Invalid KeyConditionExpression: Attribute name is a reserved keyword;
- appsync dynamodb not seeing all fields
- dynamodb-admin command not found
- dynamodb mapper save not persisting
- Unable to start DynamoDB Local process
- an expression attribute name used in the document path is not defined
- dynamodb atomic counter not working
- AWS DynamoDB errors ResourceNotFoundException
- could not unconvert attribute dynamodb
- One or more parameter values were invalid: some AttributeDefinitions are not used
- could not load profile default dynamodb
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