Sender ID (Header) approval for DLT SMS typically takes 60 minutes on portals like Airtel or Jio, though discrepancies may delay notification to 72 hours. After submission in the “SMS Headers” section, wait for confirmation, then add it to your SMSGatewayCenter SMS gateway at https://unify.smsgateway.center. Speed up compliance by preparing accurate details—see the process at smsgatewaycenter.com/dlt-sms/.
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