File Upload Error Occurring Only When Switching to a Specific Instance

[suzuki-ryuji]

I have a question regarding the error occurring during file uploads.

When the connection is set to a specific instance, two error messages appear during the file upload process.

For the first error, although the message suggests checking the CloudWatch logs, no detailed information is recorded in the logs. Therefore, I close the error popup and proceed to the next step.

However, in the case of the second error (details below), I am unable to proceed, and the file upload cannot be completed.

Details of the Second Error:
At "Step 5," when clicking the final "Submit" button, red text appears below the instance name with the following error message:
{ "Status": "Error", "Message": "Expecting value: line 1 column 1 (char 0)" }

These two errors do not occur when switching the configuration to a sandbox environment or other instances.

I have attached a screenshot of the error from the JavaScript console for your reference. Could you please review the details?

Additionally, the CSV file complies with AMC's requirements, and I have confirmed that it can be uploaded without any issues to multiple other instances.

These errors occur only when switching the upload destination to a specific instance.
When switching the upload destination to any other instance, uploading the same file succeeds without any issues.

Could you please clarify the cause of these problems and provide a solution?

[ianwow]

Please complete the following information about the solution:

• Version: [e.g. v1.0.0]

To get the version of the solution, you can look at the description of the created CloudFormation stack. For example, "(SO0222) - amcufa v1.0.0. This is the base AWS CloudFormation template that defines resources and nested stacks for this solution.". If the description does not contain the version information, you can look at the mappings section of the template:

Mappings:
  Application:
    Solution:
      Id: "SO0222"
      Name: "amcufa"
      Version: "v1.0.0"

• Region: [e.g. us-east-1]

[suzuki-ryuji]

The version information for the solution is as follows:
Version: [v3.0.8]

[ianwow]

What region? Knowing the region will enable me to confirm that you are using the correct Marketplace Id.

[suzuki-ryuji]

The region for the solution is as follows:
us-east-1

[ianwow]

Your screenshot shows that a marketplace ID for Japan is being used. Try changing that to the marketplace ID for USA, ATVPDKIKX0DER. That value can be set under the Settings page.

Reference:
https://advertising.amazon.com/API/docs/en-us/guides/traffic-events/getting-started#marketplaces

[suzuki-ryuji]

On the settings page, I changed the marketplace ID to the US marketplace ID, ATVPDKIKX0DER, and tested it, but the same error message appeared, and I was unable to upload.

[ianwow]

I appreciate the detailed information you've provided. However, for your security, I recommend we continue this discussion in private. Please email amc-support@amazon.com and request to be put in contact with me, Ian Downard.

[ianwow]

This issue appears to have been the result of using LwA tokens from a developer account that lacked the permissions necessary to use the AMC Instance in question.

For now, I'll be closing this issue to keep our active issues list focused on current, unresolved problems. If you need further assistance in the future, feel free to open a new issue.