There could be a few reasons for the API error you're experiencing with our managed APIs in a waterfall:
1. Invalid API Key: Your key might not be authorized for the specific endpoint or lack necessary permissions.
2. Incorrect API Key: Ensure you're using the correct and active API key for the service.
3. Body Parse Error: This could be due to issues in the Body section of your Enrichment Panel input, such as missing quotes around keys or syntax errors.
To troubleshoot, first verify your API key in Clay settings. If the issue persists, could you please copy and paste the exact JSON or error message you're seeing? This will help us diagnose the problem more accurately.