An internal error occurred while processing the request.
The service is currently unavailable. This may happen only on some requests where the system creates backpressure to prevent the server's compute resources from being exhausted, avoiding more severe failures. In this case, the title of the error object contains RESOURCE_EXHAUSTED. Clients are recommended to eventually retry those requests after a backoff period. You can learn more about the backpressure mechanism here: https://docs.camunda.io/docs/components/zeebe/technical-concepts/internal-processing/#handling-backpressure .
The process instance creation request timed out in the gateway.
This can happen if the awaitCompletion request parameter is set to true
and the created process instance did not complete within the defined request timeout.
This often happens when the created instance is not fully automated or contains wait states.
The provided data is not valid.