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Error! "InvalidSignature"

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Trying to use Scratchpad to get images for my Associates account and it's giving me "Error! "InvalidSignature" "The request has not been correctly signed. If you are using an AWS SDK, requests are signed for you automatically; otherwise, go to https://webservices.amazon.com/paapi5/documentation/sending-request.html#signing.""

I have already created two credentials since this happened before, with the last one.

I am using the CSV file and copying it over by highlighting the text and then copying (no double click). I'm using PAAPI Credentials and still getting the issue.

My time sync on my Mac is set automatically.

I am using the only Partner tag I have which is my store ID.

asked a year ago155 views

2 Answers
5

Allow me to list out some potential issue and fix:

  1. Incomplete Secret Key Copy If you copy the secret key by highlighting manually, especially from a CSV or web UI, you might miss hidden characters (like / or trailing whitespace). Fix: Always use the “Download credentials” button or open the CSV in a text editor and copy the full string carefully.
  2. Wrong Credentials Type Make sure you're using PAAPI-specific credentials, not general AWS IAM keys. Fix: Go to your Amazon Associates account and generate credentials specifically for PAAPI 5.0.
  3. Incorrect Partner Tag Your Partner Tag must match your store ID exactly and be registered with PAAPI. Fix: Double-check that the tag is active and correctly entered in the Scratchpad.
  4. Time Drift Even though your Mac is set to sync time automatically, a few seconds of drift can cause signature mismatches. Fix: Run ntpdate -q time.apple.com in Terminal to verify time sync.
  5. Scratchpad Locale Mismatch Fix: Try changing the marketplace dropdown and re-testing.
EXPERT

answered a year ago

  • I have used the CSV in text editor.

    I use PAAPI credentials.

    I have the Partner Tag.

    That run request does not work.

    Changing the marketplace did nothing

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I have used the CSV in text editor. I use PAAPI credentials. I have the Partner Tag. That run request does not work. Changing the marketplace did nothing

answered a year ago

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