Undeclared Mixed Use Cases

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

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.

Optimize Your Setup

Learn when to split campaigns vs. using Mixed.

Comprehensive TCR rejection remediation powered by MyTCRPlus.com

What reviewers check for code 8004

Code 8004 is reported as "Undeclared Mixed Use Cases". Every type of content the program sends must be declared. Reviewers reject campaigns whose samples or website show message types not covered by the use case or attributes, for example marketing content in a notification campaign, cart reminders without marketing declared, or charity content without the charity attribute.

Where code 8004 comes from

Code 8004 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

1. List every message type the program sends today and plans to send.
2. Choose a use case that covers all of them (Mixed or Marketing when promotions are included).
3. Select the matching content attributes.
4. Provide a sample for each declared type.
5. Update the opt-in language so consent covers every declared type.
6. Resubmit with a note that references code 8004 (Undeclared Mixed Use Cases) 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 Brightside Dental:

Brightside Dental corrected the deficiency reported as code 8004 (Undeclared Mixed Use Cases). Changes made: list every message type the program sends today and plans to send; choose a use case that covers all of them (Mixed or Marketing when promotions are included); select the matching content attributes. 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 8004 coming back

• Treating abandoned-cart messages as transactional (they are marketing).
• Adding promotions to an existing notification campaign later.
• Forgetting to declare embedded links or phone numbers.

Related rejection codes

• Code 8200: Marketing Sample Without Attribute
• Code 8102: Missing Sample for Use Case
• Code 8003: Cart Reminder Without Marketing
• Code 2200: Marketing Flow Without Attribute
• Code 2005: Undeclared Use Case Detected
• Code 2131: Verbal Script Missing STOP Instructions

Frequently asked questions about code 8004

Are abandoned-cart reminders marketing?

Yes. Carriers treat them as promotional because no transaction was completed. Declare marketing and collect marketing consent.

What happens if I start sending a new type after approval?

Undeclared content can cause filtering or suspension. Update the campaign before sending new types.