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Error: DynamoDB Invalid UpdateExpression Syntax Error Token

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.

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