When you send SMS, you may find different status codes, below table will help you understand these status’s in detail.
|DELIVRD||successfully delivered to handset|
|AWAITED-DLR||SMS has been submitted to operator, and reports are awaited|
|pending||SMS is in SMS Alert’s queue and shall be processed on scheduled time|
|BLACKLST||the subscriber is in SMS Alert’s Blacklist|
|ABSENT-SUB||the subscriber is either switched off or out of network coverage area|
|BARRED||SMS services are barred for this subscriber|
|INVALID-SUB||the subscriber is either invalid or does not exists|
|NETWRK-ERR||there is some temporary error in receiving/subscribers operator|
|DNDNUMB||the subscriber is registered in do not disturb registry|
|DEFERRED||SMS delivery has been delayed and shall be retried later|
|MEMEXEC||the subscriber does not have SMS storage space in handset|
|CONGESTION||there is some temporary network congestion in between sender and receivers operator|
|NO-DLR-OPTR||Actual delivery report was not received from the operator within the set time duration|
There could be more error codes, as we add them time to time, as technology enhances.