getting error could not instantiate class com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBGeneratedUuid$Generator",

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on post request :

{

"txnId": "qwe1", "umn" : "fef", "rrn" : "dwdw" }

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avinash kumar On

Use String field only for id which is auto generated in dynamodb .Int or long will not work .