ERR_NGROK_SHIP_POOL_INTEGRATION_UNSUPPORTED: Pool kind KIND does not take an 'integration_id' - ngrok documentation

What does ERR_NGROK_SHIP_POOL_INTEGRATION_UNSUPPORTED mean?

ngrok returns ERR_NGROK_SHIP_POOL_INTEGRATION_UNSUPPORTED with this message:

Pool kind <KIND> does not take an 'integration_id'.

Where can I get more help with ERR_NGROK_SHIP_POOL_INTEGRATION_UNSUPPORTED?

Email support@ngrok.com and include the error code.