Why This Rejection Happens
Your Brand's Trust Score is too low to support the message volume you are attempting to send to T-Mobile subscribers. T-Mobile caps daily messages based on your score.
Root Cause Analysis
The Fix
You have two options: Appeal your Trust Score or pay the T-Mobile "Special Business Review" fee to unlock higher limits.
Option A: Vet Brand
Use a third-party vetting partner (Aegis/WMC Global) to verify your brand and boost your score.
Option B: Special Review
Pay the ~$500 fee for a manual review to bypass standard limits (consult your CSP).
Boost Your Score
Simulate your Trust Score and find ways to improve it.
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What reviewers check for code 3104
Code 3104 is reported as "T-Mobile Daily Limit Exceeded". T-Mobile assigns each brand a daily cap on messages to its subscribers based on the brand's vetting score and campaign type. When the cap is reached, further messages to T-Mobile numbers fail until the next day. This is a throughput limit, not a content rejection.
Where code 3104 comes from
Code 3104 is a campaign review reason code used to report a specific deficiency found during manual campaign vetting. CSPs surface it in the rejection notice alongside any other codes found in the same review, so check for companion codes before resubmitting. It has a documented fix that usually needs one targeted correction and a resubmission.
Fix and verify before resubmitting
- Check the brand's T-Mobile daily cap in your CSP dashboard.
- Schedule large sends across multiple days or prioritize time-sensitive messages.
- Apply for secondary vetting to raise the vetting score and daily cap.
- Remove inactive and non-engaged numbers to cut wasted volume.
- Ask your CSP about special business review for higher caps if your volume justifies it.
- Resubmit with a note that references code 3104 (T-Mobile Daily Limit Exceeded) and lists each change made.
Sample resubmission note
Many CSPs let you add a note for the reviewer when you resubmit. A short, specific note shows what changed and speeds up the second review. Example for Ostrander & Lee Law:
Ostrander & Lee Law corrected the deficiency reported as code 3104 (T-Mobile Daily Limit Exceeded). Changes made: check the brand's T-Mobile daily cap in your CSP dashboard; schedule large sends across multiple days or prioritize time-sensitive messages; apply for secondary vetting to raise the vetting score and daily cap. All URLs, keywords and auto-replies were re-tested from an external network before this resubmission, and the campaign text now matches the live opt-in exactly.
Common mistakes that keep code 3104 coming back
- Creating duplicate campaigns to spread volume (counts against the same brand cap).
- Retrying failed messages immediately, consuming the next day's cap.
- Ignoring the cap until a critical send fails.
Related rejection codes
- Code 2131: Verbal Script Missing STOP Instructions
- Code 2128: Opt-in Form Missing HELP Instructions
- Code 2127: Verbal Script Missing STOP Instructions
- Code 2126: Opt-in Form Missing STOP Instructions
- Code 2124: Verbal Script Missing Frequency Disclosure
- Code 2123: Verbal Script Missing Message Type
Frequently asked questions about code 3104
Does code 3104 affect AT&T and Verizon?
No. The daily cap is T-Mobile specific; AT&T uses per-second throughput limits instead.
How do I raise the cap?
Secondary vetting with a higher score usually raises it. Your CSP can also request special business review for large senders.