Symptom
An embedded WLC on 9300 will need to be configured using the "Embedded Wireless Setup".
While following the deloyment guide "https://www.cisco.com/c/en/us/products/collateral/wireless/catalyst-9800-series-wireless-controllers/guide-c07-744299.html" we face an error when trying to add a Wireless Network after clicking the Apply button.
The error message says:
Error in Configuring Basic Wireless Setup
instance-id xxxxxxxx
^
Invalid input detected at '^' marker.
Conditions
Initial configuration of eWC on 9300