The error "token not authorised" might indicate that you're passing just the API key for tokenised authentication and not an encoded username+API key combination.

To successfully authenticate to the Assembly Payments API, there are two methods to use:

  1. Basic authentication using your username and API key.
  2. Tokenised authentication using a Base64 encoded username and API key to pass a single authentication token.

For more information on API keys and authenticating with Assembly Payments, refer to the guide on  API Keys.

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