Goodpick Messaging Gateway ensures 100% submission to SMS Center at telecom operator followed by their DLR Status against each mobile number.

DLR updates may take maximum duration of 24hrs from submission of the same.

DLR Status is the result of recipient handset acknowledgement sent to telecom operator system.

DLR Error Code Descriptions:

 DELIVRD    -    DELIVRD to SIM
UNDELIV     -    Unidentified Subscriber or Illegal Subscriber or Tele service not provisioned or Illegal Equipment or Call Barred or Facility Not Supported or Data Missing or Unexpected Data Value or Unrecognized component or Mistyped component or Body structured component or Mistyped parameter or Mistyped parameter or Unrecognized error or unexpected error or Unable to decode response or User abort or API Error or Unknown Error or Subscriber Unreachable or Unidentified Subscriber 
EXPIRED - Unrecognized invode ID or SMS-Delivery Failure or System Failure or Resource limitation or Initiating release or Unrecognized linked ID or Return result expected or Unrecognized invoke ID or Return error unexpected or Absent Subscriber or Subscriber Busy For MT_SMSor Provider abort or Timeout 
SUBMTED - Duplicate invoke ID   or Linked Response expected or Unexpected linked operation, Unidentified Subscriber. 
NCPRDND - DND Error Code
REJECTED - Source / Template Error Code or DND Error Code
PENDING   - Report yet to be updated