If you are seeing Error 30034 or “Undelivered” status in your Salesforce logs, your organization is likely being caught in the February 2026 10DLC Zero-Tolerance Filter. Carriers (AT&T, Verizon, T-Mobile) have now fully implemented automated blocking for any Salesforce text messaging that isn’t pre-vetted via The Campaign Registry (TCR).
To resolve Salesforce SMS Error 30034, you must register your Brand and Campaign with The Campaign Registry (TCR). The fastest way to restore delivery in 2026 is using a native app like Message Blink, which automates 10DLC vetting and connects directly to Agentforce without external middleware.
What is Error 30034 in Salesforce?
Error 30034 specifically means “Message from an Unregistered Number.” In the context of SMS integration with Salesforce, this occurs when your 10-digit long code (10DLC) is not associated with an approved A2P Campaign. To send text messages from Salesforce successfully in 2026, you can no longer bypass the registration process.
In simple terms:
- Your message is sent from Salesforce
- Salesforce shows it as “sent”
- But carriers block delivery
- Result: SMS never reaches the customer
Common Causes of Salesforce SMS Error 30034
1. Sender Number Not Registered for 10DLC
If your Salesforce SMS number is not registered under an approved 10DLC campaign, carriers will block all messages.
2. Brand or Campaign Not Approved
Incomplete or rejected A2P brand registration causes Salesforce SMS delivery failures.
3. Wrong Number Linked to Salesforce SMS App
Even approved campaigns fail if Salesforce is sending SMS from an unlinked number.
4. Mass Texting Without Compliance
Salesforce mass texting and bulk SMS require strict opt-in and use-case validation.
How to Fix Salesforce SMS Error 30034 (Step-by-Step)
Step 1: Understand 10DLC Requirements for Salesforce SMS
10DLC allows businesses to use standard 10-digit phone numbers for high-volume SMS instead of short codes, but it requires registration to verify legitimacy. Key elements include:
- Brand Registration: Verifies your business identity.
- Campaign Registration: Defines your messaging use cases (e.g., marketing, alerts, support).
- Opt-In/Opt-Out Compliance: Ensures consumer consent and easy unsubscribes.
- Costs: Expect one-time and recurring fees. Brand registration might cost $4–$44 (depending on vetting level), campaign registration around $15–$30 per campaign, and monthly carrier fees ($2–$10 per number). In Salesforce, these can be managed via Setup > Regulatory Compliance or through integrated apps.
Non-compliance risks escalate in 2026: Fines up to $10,000 per violation from carriers like T-Mobile, plus reputational damage from “Unverified” labels.
Step 2: Register Your Brand for 10DLC in Salesforce
Start in Salesforce Service Cloud or Marketing Cloud:
- Navigate to Setup > Quick Find > “Regulatory Compliance” > Select “Regulatory Compliance.”
- On the 10DLC Brands tab, click Register Brand.
- Provide accurate business details:
- Legal Name (must match IRS SS-4 letter exactly).
- Tax ID (EIN) -No dashes or typos.
- Business Address (physical, not P.O. Box).
- Industry/Vertical (e.g., Retail, Healthcare).
- Website URL and Contact Info.
- Choose vetting level: Standard (basic) or Enhanced (for higher trust scores, recommended for large volumes).
- Submit for approval via TCR. Approval can take 1–7 days; enhanced vetting may add time.
If using third-party integrations (e.g., Twilio), register directly through their console and link the number to your Salesforce setup.
Step 3: Register Your Campaign Use Case
Once the brand is approved:
- In Regulatory Compliance, go to 10DLC Campaigns > Register Campaign.
- Select a use case (e.g., “Marketing,” “Customer Care,” “2FA”).
- Provide:
- Campaign Description: Explain purpose (e.g., “Sending appointment reminders to customers”).
- Sample Messages: 2–5 real examples (e.g., “Hi [Name], your appointment is tomorrow at 10 AM. Reply STOP to opt out.”).
- Message Flow: How users opt in (e.g., via web form URL or keyword like “START”).
- Link your phone numbers to the campaign.
- Submit for review. Carriers approve based on compliance; rejections often stem from vague descriptions or mismatched details.
Wait 24 hours after approval before testing to ensure full carrier propagation.
Step 4: Audit and Update Privacy Policy
Carriers require a public privacy policy with specific language:
- Add: “No mobile information will be shared with third parties/affiliates for marketing/promotional purposes. All other categories exclude text messaging originator opt-in data and consent; this information will not be shared with any third parties.”
- Link it on your website and reference it in opt-in flows.
Step 5: Implement Opt-In and Opt-Out Mechanisms
To avoid blocks:
- Opt-In Methods: Use double opt-in where possible. Examples:
- Webform: Provide URL with checkbox for SMS consent.
- Keyword: “Text YES to [Number] to subscribe.”
- Verbal: Script like “Do you consent to receive SMS updates? Reply YES.”
- Opt-Out: Automatically handle keywords like STOP, UNSUBSCRIBE, CANCEL. In Salesforce, use flows or apps to update contact fields (e.g., SMS Opt-Out).
- Store consent records for audits.
Test by sending messages post-registration; monitor in Salesforce’s Message Logs for resolution of Error 30034.
Step 6: Monitor and Maintain Compliance
- Use Message Blink’s Salesforce Deliverability Dashboard for real-time monitoring of trust scores and error rates.
- Resubmit if campaigns are rejected (common reasons: Incomplete samples or non-compliant content).
- For high-volume senders, aim for a Campaign Trust Score above 75 to avoid throttling.
Best Practices to Avoid Error for 2026
- Personalize messages with merge fields (e.g., {!FirstName}) to improve engagement by up to 40%.
- Lead with value in the first 20 characters.
- Send timely, relevant messages (e.g., 24-hour reminders).
- If using integrations, ensure numbers are linked correctly to avoid partial failures.
- Consult Salesforce support or partners for custom setups.
By following these steps, you should resolve Error 30034 and ensure smooth SMS delivery. If issues persist, check for carrier-specific blocks or consult Message Blink Help for error logs.
Conclusion: Don’t Let Error 30034 Silence Your Business
Restoring your Salesforce SMS messaging isn’t just about clearing an error code; it’s about rebuilding the bridge to your customers. In 2026, carrier filters are unforgiving, but compliance doesn’t have to be a roadblock. By transitioning to a native Salesforce texting app like Message Blink, you eliminate the friction of third-party middleware and automate the complex 10DLC registration process. Whether you are scaling Salesforce mass texting or deploying Agentforce AI agents, a native architecture ensures your voice is heard, your data is secure, and your delivery rates remain at 100%.
Ready to end the 10DLC headache? Stop fighting with Error 30034 and start texting with confidence. Join the thousands of Salesforce Admins who have switched to Message Blink for 100% native, secure, and compliant messaging.
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