> ## Documentation Index
> Fetch the complete documentation index at: https://ngrok.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Error 224

## ERR\_NGROK\_224

The value `VAL` is not valid for the terminate\_at property of the TLS Termination endpoint configuration module. Must be either 'edge', 'agent' or 'upstream'.

## Further help

If you're having trouble resolving this error, please reach out to [support@ngrok.com](mailto:support@ngrok.com?subject=Help%20with%20ERR_NGROK_224)