Available in Classic and VPC
Learn how to resolve issues with Simple & Easy Notification Service. Click any error for detailed troubleshooting steps.
Troubleshoot common issues
The following are examples of common errors you might encounter:
Project creation limit
I didn't create any projects, but the creation limit notification appears.
Unable to view the delivery history
I can't view the history of messages sent 2 months ago.
Troubleshoot Biz Message issues
The following are examples of Biz Message-related issues you might encounter:
KakaoTalk Channel registration errors
KakaoTalk Channel is not registered in the console.
I received the message "The channel and template features you requested cannot be processed. Check the status and try again."
I received the message "Check the KakaoTalk Channel status."
Enter Customer Center information
When creating a channel, I received the message "Entry of customer center information is required for the outgoing profile channel to be registered."
I received the message "The requested channel operation cannot be performed."
Cannot locate the field for entering customer center information.
Unable to register channels
Channel cannot be registered.
I received the message that registration is not possible due to a history of channel deletion.
Channel deletion delay
Channel deletion is delayed.
The channel I deleted and tried to register again still remains in "Deleting" status.
AlimTalk reception failed
AlimTalk delivery request was successful, but the reception status is displayed as failed.
The API response shows the status as "COMPLETED", but the notification was not delivered.
Change channels connected to templates
The wrong channel was selected for template approval.
I am operating multiple channels and want to change the channel connected to an approved template.
Redirected to the project page when registering AlimTalk templates
I am redirected to the project page when registering an AlimTalk template.
Template approval delay
The AlimTalk template inspection request is still in progress.
Template approval is not being completed.
Error message: "Template button format is not valid"
I received the message "Template button format is not valid."
An error occurs even when applying the same settings as a previously registered template.
Unable to preview messages
Message previews are unavailable upon receipt, even though the template is not registered as a security template.
Errors when entering Korean in the channel name
When the channel name is entered in Korean in API parameters, a 401 unauthorized error occurs.
Unable to edit or delete AlimTalk
The button to edit or delete a registered AlimTalk message is disabled.
Error 3016 and error message: "Message content does not match the template"
I received error code 3016.
I received the message "Message content does not match the template."
The request succeeded, but the reception is displayed as failed.
Error 3018 and error message: "Message could not be sent"
I received error code 3018.
I received the message "Message could not be sent."
Troubleshoot SMS issues
The following are examples of SMS related errors you might encounter:
reserveTime setting errors
When the scheduled message's reserveTime extends beyond approximately 6 months from now, an error occurs.
Unable to unsubscribe from 080 Block Call Service
I can't unsubscribe from 080 Block Call Service.
Sending limit increase
The sending limit is too low.
I want to increase the sending limit for domestic and international SMS (including LMS and MMS).
Error 3009
When I sent an MMS, I received Error 3009.
Error 3014 and error message: "Other"
I received error code 3014.
I received Error 3014, but only the message "Other" is displayed.
Error 3015 and error message: "No delivery path"
I received error code 3015.
I received the error message "No delivery path."
Error 3018
I sent an SMS message and received Error 3018.
Replacement of specific characters with special characters in messages
When I send an SMS message, specific characters are replaced with the character "?".
Change the registered calling number
I want to change the registered calling number.
Troubleshoot MAIL issues
Image errors in email attachments
Images attached to Cloud Outbound Mailer emails are not displayed.
Mail delivery failure to Gmail recipients
Sending mail to Gmail recipients fails.
Unable to view mail delivery logs
There are no logs for the mail I sent.
"NONEXISTENT_DOMAIN_ADDRESS" delivery result code and "Recipient domain does not exist" delivery result message
When I send mail, the delivery result code is "NONEXISTENT_DOMAIN_ADDRESS", and the delivery result message is "Recipient domain does not exist".
Error message: "Connection reset"
I received the error message "Connection reset".
Bulk mail delivery failure
Many messages fail when sending bulk mail.
Unable to view or remove send block list entries in bulk
I want to view or remove all addresses registered in the Send block list at once.
Delivery failed but received status displayed as Y
The mail delivery result is failed, but the received status is displayed as Y.
Received status not updated
I received the mail, but the received status is not updated.
Mail delivery failure through API
I tried to send mail through the Cloud Outbound Mailer API, but the "IP not allowed for authentication." error occurred.
Delivery delay when sending bulk mail
I sent bulk mail, but it takes a long time to be received.
Delivery failure displayed
The mail delivery result is displayed as "Delivery failed".
DKIM authentication failure
DKIM authentication fails.
DKIM authentication failure despite signature value retrieval
The DKIM signature value is successfully retrieved, but DKIM authentication fails.
Mail delivery failure after DKIM authentication is complete
I completed DKIM authentication, but delivery results alternate between success and failure when sending mail.
Domain records can be retrieved but authentication fails
The domain records are registered properly and can be retrieved, but authentication fails.
Records registered properly but authentication fails
Authentication fails even though the SPF or DKIM records are registered properly.
SPF authentication failure
SPF authentication fails.
Learning resources
We offer various materials for you to explore. To learn more about Simple & Easy Notification Service, check out these helpful links:
- FAQs: Simple & Easy Notification Service FAQs
- Simple & Easy Notification Service API guide
- NAVER Cloud Platform blog:
- Simple & Easy Notification Service #2: Kafka usage experience for message delivery
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