I know this is several months late, but I ran into the same problem while attempting to do the same exact thing. The problem is with Esri's documentation, specifically the s3/DynamoDB step. In their documentation, the connection string is horribly malformed and is not JSON. The actual connection string should look like: { "type":"AMAZON", "connectionString":"NAMESPACE=<Name of your Bucket>;REGION=<AWS region e.g us-west-2>;" } OR { "type":"AMAZON", "connectionString":"NAMESPACE=<Name of your Bucket>;REGION=<AWS region e.g us-west-2>", "connectionSecret":"ACCESS_KEY_ID=<Your AccessKey>;SECRET_KEY=<Your Secret Key>;" } Using a colon instead of an equals sign. Hope this helps. Ben
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