CD.COM.API.03 api_error_codes_subscribe_unsubscribe

Error codes for /subscribe and /unsubscribe endpoints:

Code	Description
rjct.message.subscribe_request.invalid	Subscribe request is missing or invalid
rjct.registry_type.invalid	Registry type in request is invalid or missing
rjct.event_type.invalid	Event type in request is invalid or missing
rjct.frequency.invalid	Frequency in request is invalid or missing
rjct.subscribe_criteria.invalid	Required attribute in subscribe criteria missing
rjct.reason.invalid	Request attribute is invalid or missing