Sole Proprietor Not Supported

Why This Rejection Happens

You are attempting to register a "Sole Proprietor" campaign type, but your Brand is registered as a formal entity (LLC, Inc., Corporation) OR your messaging provider (CSP) does not support Sole Prop registrations.

Root Cause Analysis

The Fix

You must select the correct campaign type for your business entity.

✓ Correct Path

Select "Low Volume Standard" or "Standard" campaign type. This matches your LLC/Corp status.

✗ Incorrect Path

Selecting "Sole Proprietor" to save money/time when you are actually an LLC.

Related Rejection Codes

Verify Your Entity Type

Ensure your Brand and Campaign types align correctly.

Comprehensive TCR rejection remediation powered by MyTCRPlus.com

What reviewers check for code 6100

Code 6100 is reported as "Sole Proprietor Not Supported". The Sole Proprietor brand type is for individuals without an EIN. It allows one campaign and one phone number, requires one-time passcode verification on the owner's mobile, and cannot be used by companies that have an EIN, by resellers, or for restricted use cases. Reviewers reject registrations that do not meet these criteria or that do not match the owner's details.

Where code 6100 comes from

Code 6100 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. If the business has an EIN, register as a standard brand instead of a sole proprietor.
2. Use the owner's legal first and last name and a mobile number that can receive the verification OTP.
3. Complete OTP verification promptly; unverified sole proprietor brands expire.
4. Keep the campaign to a single permitted use case and a single number.
5. Confirm your CSP supports sole proprietor registration for your account type.
6. Resubmit with a note that references code 6100 (Sole Proprietor Not Supported) 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 Pulse Cycle Studio:

Pulse Cycle Studio corrected the deficiency reported as code 6100 (Sole Proprietor Not Supported). Changes made: if the business has an EIN, register as a standard brand instead of a sole proprietor; use the owner's legal first and last name and a mobile number that can receive the verification OTP; complete OTP verification promptly; unverified sole proprietor brands expire. 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 6100 coming back

• Choosing sole proprietor to avoid EIN verification when an EIN exists.
• Using an office landline for OTP verification.
• Registering multiple sole proprietor brands for the same person.

Related rejection codes

• Code 30903: Sole Proprietor Mismatch
• Code 802: Sole Proprietor Not Supported
• Code 801: Sole Proprietor Criteria Unmet
• Code 2131: Verbal Script Missing STOP Instructions
• Code 2128: Opt-in Form Missing HELP Instructions
• Code 2127: Verbal Script Missing STOP Instructions

Frequently asked questions about code 6100

Our CSP says sole proprietor is not supported. What now?

Some CSPs and account types (including ISVs registering for clients) do not offer sole proprietor registration. Obtain an EIN and register a standard brand, or move to a CSP that supports it.

Can a sole proprietor send marketing messages?

Yes, within the single campaign, if the opt-in, disclosures and content meet the same rules as any other campaign.