Error 30005 occurs when an SMS cannot be delivered because the destination number is unknown, inactive, unreachable, or otherwise unable to receive messages. In some cases, the issue may also be related to the recipient’s device or mobile carrier.

TABLE OF CONTENTS

What Is Error 30005?

Error 30005 means the destination number could not be reached successfully.

This can happen when:

  • The phone number is no longer active.

  • The number was entered incorrectly.

  • The recipient’s device is powered off.

  • The device has weak or no signal.

  • The destination cannot receive SMS.

  • The recipient’s carrier is experiencing a delivery issue.

Key Benefits of Troubleshooting Error 30005

Identifying whether the problem is caused by the destination number, device, or carrier helps reduce repeated delivery failures.

  • Faster Diagnosis: Determine whether the issue is related to an invalid number, unavailable device, or carrier problem.

  • Cleaner Contact Data: Correct outdated or incorrectly entered phone numbers.

  • Fewer Failed Messages: Avoid repeated sends to numbers that are no longer active.

  • Better Messaging Reliability: Confirm that destination numbers are properly formatted and SMS-capable.

Common Causes of Error 30005

Error 30005 may occur when:

  • The destination number is unknown.

  • The number has been disconnected or no longer exists.

  • The phone number is formatted incorrectly.

  • The wrong country code is being used.

  • The destination device is powered off.

  • The device has insufficient signal.

  • The destination is a landline or otherwise cannot receive SMS.

  • The mobile carrier is experiencing a temporary issue.

How to Fix Error 30005

Start by reviewing the destination number carefully.

  1. Open the affected contact record.

  2. Confirm the phone number belongs to the intended recipient.

  3. Verify that the number is still active.

  4. Confirm the number is capable of receiving SMS.

  5. Check the country code.

  6. Format the number using E.164 format.

  7. Correct any missing digits, typos, or invalid prefixes.

  8. Retry the message after confirming the number is valid.

  9. If the issue appears temporary, wait and try again later.

Use E.164 Phone Number Format

Destination phone numbers should use E.164 formatting:

+[country code][subscriber number]

For example:

+14155552671

Avoid:

  • Missing country codes

  • Extra spaces

  • Parentheses

  • Local dialing prefixes

  • Incorrect international prefixes

  • Incomplete numbers

Correct formatting helps ensure the destination is interpreted properly.

Check Whether the Number Is Still Active

A destination number may have been:

  • Disconnected

  • Reassigned

  • Entered incorrectly

  • Removed from service

If the recipient confirms the number is no longer active, update the contact record with a valid mobile number before sending again.

Check Device and Network Availability

A valid number can still be temporarily unreachable.

Ask the recipient to confirm:

  • The device is powered on.

  • Mobile service is active.

  • The device has sufficient signal.

  • The device is not in airplane mode.

  • The carrier is not experiencing a service interruption.

If the problem is temporary, retrying later may resolve it.

Check Whether the Number Can Receive SMS

Some destination numbers cannot receive standard SMS.

Confirm that:

  • The number is mobile-capable.

  • The number is not a landline.

  • The recipient can receive SMS from other senders.

  • The mobile carrier supports messaging for the destination.

If the number cannot receive SMS, use another supported communication method.

Check Workflows and Imported Contacts

If Error 30005 occurs during automated messaging, review the source of the phone number.

Check:

  • Imported contact lists

  • Form submissions

  • Custom phone fields

  • Workflow recipient fields

  • Campaign contact data

  • Manually entered phone numbers

Correcting the contact record can prevent repeated failures.

Frequently Asked Questions

Q: What does Error 30005 mean?
It means the destination number could not be reached because it may be invalid, inactive, unavailable, or unable to receive SMS.

Q: Can an incorrect phone number cause Error 30005?
Yes. Missing digits, incorrect country codes, or other formatting problems can cause delivery to fail.

Q: Can a disconnected number trigger this error?
Yes. A number that no longer exists or has been taken out of service may return Error 30005.

Q: Can weak signal cause Error 30005?
Yes. A destination device with poor or no signal may be temporarily unreachable.

Q: Can a landline cause this error?
Yes. A landline or other non-SMS-capable destination may fail with this error.

Q: Should I retry the message?
You can retry if the number is valid and the issue appears temporary. If the error repeats, review the number, device, and carrier before trying again.

Need Help?

If Error 30005 continues, first confirm that the destination number is valid, active, and able to receive SMS.

Verify that:

  • The destination number belongs to the intended recipient.

  • The number is still active.

  • The number is formatted in E.164 format.

  • The correct country code is included.

  • The number contains all required digits.

  • The destination is SMS-capable.

  • The number is not a landline.

  • The recipient’s device is powered on.

  • The device has sufficient mobile signal.

  • The recipient’s carrier is not experiencing a temporary issue.

  • Imported or form-submitted contact data is accurate.

  • The workflow or campaign is using the correct phone field.

If the issue continues, collect at least three failed message examples from the last 24 hours, including the sending number, destination number, timestamps, recipient carrier if known, and screenshots showing Error 30005 before contacting support.