A notification of an event sent to your configured callback URL.
Discriminated by resourceType: ACTIVE_NUMBER or NUMBER_ORDER.
failureCode and internalFailureCode remain readable on this union for backwards compatibility,
but are @deprecated here — narrow to CallbackPayloadActiveNumber instead.
A notification of an event sent to your configured callback URL. Discriminated by
resourceType:ACTIVE_NUMBERorNUMBER_ORDER.failureCodeandinternalFailureCoderemain readable on this union for backwards compatibility, but are@deprecatedhere — narrow toCallbackPayloadActiveNumberinstead.