Handle this event FileLineTransactionDispatchFailedEvent #1954

18/09/2026 13:25:07.9157 | Error |Correlation ID: 7264ee08-5879-4fec-9ded-b92e9323c81f| .lambda_method58 | An unhandled exception has occurred while executing the request. Url: http://localhost:5002/api/domainevents | System.Exception | KeyNotFoundException The given key 'FileLineTransactionDispatchFailedEvent' was not present in the dictionary. Void ThrowKeyNotFoundExceptionT
18/09/2026 13:25:07.9157 | Warn |Correlation ID: 7264ee08-5879-4fec-9ded-b92e9323c81f| .lambda_method58 | Request: Method: POST Url: http://localhost:5002/api/domainevents Headers: Host=localhost:5002, Content-Type=application/json, Content-Length=302, eventType=FileLineTransactionDispatchFailedEvent, subscriptionId=Main, X-Catchup-Subscription-Id=$idx-ce-FileAggregate_Transaction Processor_Main, X-Catchup-Meta-$traceId=bc8985ca74cd8a66acf46c4e258785d2, X-Catchup-Meta-$spanId=68aa3462493cf9c9 Body: {"fileId":"fc9c7800-1c25-22c7-0d34-c89e19047014","estateId":"435613ac-a468-47a3-ac4f-649d89764c22","merchantId":"ab1c99fb-1c6c-4694-9a32-b71be5d1da33","lineNumber":6,"transactionNumber":30,"failureType":"SendFailure","attemptedAt":"2026-09-17 08:00:25","EventId":"0c21f237-e39c-40a8-bfb5-a7a98dce2091"} |
18/09/2026 13:25:07.9157 | Warn |Correlation ID: 7264ee08-5879-4fec-9ded-b92e9323c81f| .lambda_method58 | Response: Status Code: 500 Headers: Content-Type=application/json Body: {
"message": "Unexpected error"
} |
18/09/2026 13:25:07.9157 | Info |Correlation ID: 7264ee08-5879-4fec-9ded-b92e9323c81f| .lambda_method59 | 500 Receiving from ::1 => POST localhost:5002/api/domainevents Duration: 2ms |

Also in the failure case is there a way that a more useful response can be returned to the caller