If your GoHighLevel text messages are failing, showing carrier errors, or simply not reaching customers in the US, the first thing to check is A2P 10DLC registration. US carriers now filter or block business texts sent from unregistered local numbers. This guide explains what A2P 10DLC is, how to register inside GoHighLevel, and how to fix the rejections we see most often.
Note: carrier rules and fees change. This guide reflects the general process; always follow the current instructions in your GoHighLevel Trust Center and from your carrier provider.
What A2P 10DLC is and why it matters
A2P means application-to-person: messages sent by a business system rather than a person typing on a phone. 10DLC means a standard 10-digit long code, the kind of local number most businesses use in GoHighLevel.
US carriers created the registration system to cut spam. Businesses must register two things:
- Your brand: the legal business sending messages.
- Your campaign: what you send, why, and how people opted in.
Registered traffic gets better delivery and higher throughput. Unregistered traffic gets filtered, throttled or blocked, and that silently breaks your speed-to-lead workflows, appointment reminders and review requests.
Before you start: get your website compliant
Most rejections are caused by the website, not the form. Reviewers check that your site supports what your campaign describes. Make sure you have:
- A live, working website on the business domain, with your business name visible and matching your registration.
- A privacy policy that states mobile numbers and SMS consent are not shared or sold to third parties for marketing.
- Terms of service or SMS terms describing message types, frequency, "Msg & data rates may apply", and how to opt out (Reply STOP) and get help (Reply HELP).
- Consent language on every form that collects phone numbers, for example an unticked checkbox: "I agree to receive text messages from [Business] about my enquiry and appointments. Msg frequency varies. Msg & data rates may apply. Reply STOP to opt out, HELP for help."
Step-by-step: registering in GoHighLevel
- Open the Trust Center. In the sub-account, go to Settings, then Phone System (or Phone Numbers), and find the Trust Center / A2P registration section.
- Choose the brand type. Businesses with a tax ID (an EIN in the US) register a standard brand. Sole proprietors without one use the sole proprietor path, which has lower limits.
- Enter business details exactly as on official records. Legal name, tax ID, address and business type must match what the tax authority has on file. Even small differences such as "LLC" vs "L.L.C." can cause failures.
- Create the campaign. Pick the use case that matches what you actually send, such as customer care, marketing, or mixed.
- Describe the campaign clearly: who receives messages, what they are about, and why.
- Explain the opt-in flow step by step, with the URL of the form and the exact consent text.
- Add sample messages that look like what you will really send, including your business name and opt-out language.
- Submit and monitor. Check the status regularly and respond quickly to any rejection.
Writing sample messages that get approved
Samples should be realistic and branded. Good examples:
- "Hi Sarah, this is Bright Smile Dental. Your cleaning is booked for Tue 3 PM. Reply C to confirm or call us to reschedule. Reply STOP to opt out."
- "Thanks for your enquiry with Summit Roofing! A specialist will call you shortly. Book a time now: [link]. Reply STOP to opt out."
Avoid placeholder text, public URL shorteners, and anything that sounds like a lottery, loan offer or giveaway, since these are triggers for rejection.
Most common rejection reasons and fixes
| Rejection reason | Fix |
|---|---|
| Website not accessible or does not match the brand | Use the live business domain; show the same business name as the registration |
| No privacy policy or SMS language | Add the "no sharing of mobile data" clause and SMS terms pages, linked in the footer |
| Opt-in not clearly described | Describe the exact form, its URL, the checkbox and consent wording |
| Samples missing opt-out or brand name | Include the business name and "Reply STOP to opt out" in samples |
| Brand details do not match records | Copy legal name and tax ID exactly as on official documents |
| Use case mismatch | Choose the campaign type that matches the samples (e.g. marketing vs customer care) |
After approval: keep delivery healthy
- Only text people who opted in. Imported lists without SMS consent are the fastest way to get flagged.
- Honour STOP immediately. GoHighLevel handles standard opt-out keywords; do not work around them.
- Keep content consistent with your registered campaign. Sending marketing blasts under a customer-care registration can cause problems.
- Watch error codes in conversation logs. Repeated carrier errors usually point to content filtering or a registration issue.
- Avoid spammy patterns: all caps, excessive emojis, shortened links and aggressive urgency.
Checklist
- Live website with matching business name
- Privacy policy with the SMS data clause
- SMS terms with frequency, rates, STOP and HELP
- Unticked consent checkbox on every phone-number form
- Brand details matching official records exactly
- Campaign use case that matches your messages
- Branded sample messages with opt-out language
A2P registration is one of the most common reasons our clients' automations "stop working." If your registration was rejected or messages are not delivering, our free GHL audit includes an SMS and deliverability check, and we can handle the registration for you. It also pairs naturally with our essential workflows guide, since most of those rely on SMS.
Frequently asked questions
What is A2P 10DLC?
A2P 10DLC stands for Application-to-Person messaging over 10-Digit Long Codes. It is the US carrier registration system for businesses sending text messages from standard local phone numbers. Unregistered traffic is filtered or blocked.
Do I need A2P 10DLC registration if I only text a few customers?
If you send business text messages to US numbers from a local 10-digit number through GoHighLevel, yes. Carriers apply the rules to business messaging regardless of volume.
How long does A2P 10DLC approval take?
Brand registration is often quick, while campaign review commonly takes from a few days to a few weeks. Rejections restart part of the clock, so submitting a complete, consistent application the first time saves the most time.
Why was my A2P campaign rejected?
The most common reasons are a website without a privacy policy or SMS consent language, a vague opt-in description, sample messages without opt-out instructions, and business details that do not match official records.