Delivery Error Codes

Possible error codes returned in the Chat Apps delivery receipts include:

Error codePossible ReasonComments
1AbsentSubscriberSubscriber is not registered in this chat channel
2ContentRelatedErrorContent Type is not supported by this channel
9Equipment protocol errorReceiver's app version is not capable of receiving business messages
14InternalErrorInternal error
15InvalidDestinationUserId is not valid for that channel
18Invalid parameterInvalid parameters
23ConnectionErrorChannel connection error
36ExpiredMessage expired (not delivered at requested time)
41SmscRejectMessage rejected by Chat channel
42NoCreditNot enough credit on Account wallet
43SpamFilterMessage filtered by anti-spam reason (ie exceeded daily limit of allowed messages on WhatsApp channel)
46SubscriberNotReachableMessage sent to Channel, but user is not reachable for delivery
61SessionExpiredMessage trashed by session expired reason (i.e. 24 hours for WhatsApp)