TCR Code 8004
Undeclared Mixed Use Cases
Campaign Structure Error
Rejection Rate
12%
Avg Fix Time
10 Min
Success Rate
98%
Why This Rejection Happens
Your sample messages show two distinct types of traffic (e.g., "Your code is 1234" AND "Check out our sale!"), but you selected a single-purpose use case like "2FA" or "Marketing".
Root Cause Analysis
Definition: If you use the same phone number for multiple purposes (Promotions + Alerts + Support), you MUST register as "Mixed" (or "Low Volume Mixed").
The Fix
Change your campaign use case to Mixed or split the traffic into two separate campaigns (recommended for better deliverability).
✓ Correct Choice
Select "Low Volume Mixed" or "Mixed".
✗ Incorrect Choice
Selecting "2FA" when you also send marketing texts.