I have a number of entities exposed to Alexa and have started to see these errors in the logs:
2023-01-29 17:47:27.043 DEBUG (MainThread) [homeassistant.components.alexa.state_report] Sent: {"event": {"header": {"namespace": "Alexa", "name": "ChangeReport", "messageId": "8596d164-71ad-45bd-b946-a71bdc607032", "payloadVersion": "3"}, "payload": {"change": {"cause": {"type": "APP_INTERACTION"}, "properties": [{"name": "temperature", "namespace": "Alexa.TemperatureSensor", "value": {"value": 7.48, "scale": "CELSIUS"}, "timeOfSample": "2023-01-29T17:47:26Z", "uncertaintyInMilliseconds": 0}, {"name": "connectivity", "namespace": "Alexa.EndpointHealth", "value": {"value": "OK"}, "timeOfSample": "2023-01-29T17:47:26Z", "uncertaintyInMilliseconds": 0}]}}, "endpoint": {"scope": {"type": "BearerToken", "token": "Atza|IwEBIA_dGN5Y3q-0W_BRWBuwCtLHmG2gskQx8jZGwyT4QqVF9fHuelOTBuDzjYQsPu-PGRvrIH20DicjRVSHBBN_hlb7Ul7RjrumbMAaj2GHUXLoQhBtn4ReWGc9Oct0edvbNE3Lh1z-6j8gBUIVUJHOr47sja1iMV6snJ9gDJ_DcIT2mHVQZyP71wrnkp014Zts7mzLYrw6q_PZmy3jxbek7mB8qRlImL62w4q7dhw9TjM6HrSxSAVUXhSh0toVsm5WHPNgq7jWnHaHA0tgb99dE19UNINrRMcjBqhrArONaABRoA"}, "endpointId": "sensor#adam_s_home_outdoor_temperature"}}}
2023-01-29 17:47:27.043 DEBUG (MainThread) [homeassistant.components.alexa.state_report] Received (429): {"header":{"namespace":"System","name":"Exception","messageId":"7a34e9d9-5006-4295-8602-a202be978036"},"payload":{"code":"THROTTLING_EXCEPTION","description":"Request could not be processed due to throttling."}}
2023-01-29 17:47:27.044 ERROR (MainThread) [homeassistant.components.alexa.state_report] Error when sending ChangeReport for sensor.adam_s_home_outdoor_temperature to Alexa: THROTTLING_EXCEPTION: Request could not be processed due to throttling.
I understand why it’s happening, Amazon is throttling the requests, but short of not exposing the entity to Alexa there is no other option control this.
Rather than have to stop an entire entity from sending ChangeReports to Amazon, it would be good if there was some sort of configuration for those entities that update on a more frequent basis. This way throttling could be avoided by setting an appropiate time between the sending of ChangeReports.