Delivery receipts (DLRs)
Delivery receipts and intermediate notifications have the following format and are contained in the short_message field of the deliver_sm:
id:IIIIIIIIII sub:SSS dlvrd:DDD submit date:YYMMDDhhmm done date:YYMMDDhhmm stat:DDDDDDD err:EEE text:
id: message ID returned in submit_sm_resp (up to 64 characters in length)
sub: number of messages originally submitted (set to 001)
dlvrd: number of messages delivered (000 or 001)
submit date: When message was submitted by ESME
done date: When message reached final state
stat: State of message (see Name field below)
err: Error encountered during delivery (if any)
Additionally, the following TLVs are present in the delivery receipt:
TLV | Description |
|---|---|
receipted_message_id | MC message ID of message being receipted. Should be present for MC Delivery Receipts and Intermediate Notifications. |
message_state | Delivery state as shown in below table. |
network_error_code | Error code specific to a wireless network (see error codes below). |
Message states
State | Meaning | Name | Description |
|---|---|---|---|
0 | Scheduled | SCHEDLD | The message is scheduled. Delivery has not yet been initiated. (Intermediate) |
1 | Enroute | ENROUTE | The message is in enroute state. (Intermediate) |
2 | Delivered | DELIVRD | Message is delivered to destination. (Final) |
3 | Expired | EXPIRED | Message validity period has expired. (Final) |
4 | Deleted | DELETED | Message has been deleted. (Final) |
5 | Undeliverable | UNDELIV | Message is undeliverable. (Final) |
6 | Accepted | ACCEPTD | Message is in accepted state. (Final) |
7 | Unknown | UNKNOWN | Message is in invalid state. |
8 | Rejected | REJECTD | Message is in a rejected state. (Final) |
9 | Skipped | SKIPPED | The message was accepted but not transmitted or broadcast on the network. (Final) |
Error codes
Values returned as error codes are those values returned in DLRs from supplier SMSCs.