Twilio error 63013 is a policy violation error returned by WhatsApp's platform when your message content, sending behavior, or messaging pattern is determined to violate the WhatsApp Business Messaging Policy or WhatsApp's Commerce Policy. This is one of the most serious error codes in the WhatsApp channel: unlike technical errors that are fixed by correcting your code, 63013 requires reviewing and correcting your messaging practices, and repeated violations can result in the suspension of your WhatsApp Business Account. The error is accompanied by a more specific sub-code or description from Meta that identifies the category of violation.
What Causes This Error
Sending promotional or marketing content outside of a user-initiated session window using a non-marketing approved template is a primary cause: WhatsApp strictly limits unsolicited promotional messaging and any attempt to send promotional freeform content or use a utility template for marketing purposes triggers a policy violation. Messaging users who have not explicitly opted in to receive WhatsApp messages from your business, which WhatsApp requires all businesses to obtain and document before sending any outbound messages, is a violation of both WhatsApp's Business Policy and its Commerce Policy and produces 63013 when WhatsApp's systems detect a high opt-out or spam report rate from your messages. Content that falls into WhatsApp's prohibited content categories, including messages about adult content, gambling services, alcohol and tobacco sales, weapons, political advertising, and multi-level marketing schemes, is blocked at the platform level and generates 63013 regardless of whether the recipient consented. Sending the same message template to a very large number of users in a short time window at a rate that WhatsApp's anti-spam systems classify as bulk unsolicited messaging can trigger a temporary 63013 block on your WABA, even if each individual recipient has opted in.
How to Fix It Step by Step
Open the Twilio Console and navigate to Monitor, then Debugger to find the 63013 error entry and read the full error description returned by Meta, which specifies the policy category that was violated: this narrows your investigation to either content, opt-in practices, or sending rate behavior. Review the exact message content that triggered the violation against WhatsApp's Business Messaging Policy and Commerce Policy, paying particular attention to the prohibited content categories and the rules around promotional messaging outside customer-initiated sessions. Audit your opt-in collection process to confirm that every recipient in the affected send batch has a recorded, explicit opt-in event in your database (timestamp, channel through which they opted in, and the specific consent language shown), as Meta may request this documentation if you appeal a WABA restriction. Pause any ongoing outbound WhatsApp campaigns immediately upon receiving 63013, reduce your template send rate to below your current WhatsApp Business Account's messaging tier limit, and review all templates currently in use to ensure their approved category (utility, authentication, or marketing) matches the actual content being sent.
How to Prevent It from Recurring
Establish a formal WhatsApp messaging policy for your organization that defines which content categories are permitted, requires documented opt-in for all recipients before any message is sent, and specifies the approved templates to use for each messaging use case, ensuring all team members who configure campaigns understand and follow these rules. Implement a content review step in your template submission workflow where all new templates are reviewed against WhatsApp's prohibited content categories and categorized correctly (utility for transactional messages, marketing for promotional messages) before submission to the WhatsApp template approval queue. Respect your WhatsApp Business Account's messaging tier and do not exceed the per-day limit for template sends to unique users, as exceeding the tier limit is a signal that WhatsApp's anti-spam systems use to flag accounts for policy review. Track your message quality rating in the WhatsApp Manager section of the Meta Business Manager, which shows a quality score that reflects recent opt-out rates and spam reports from your recipients: a declining quality score is an early warning of policy risk that should trigger a content and targeting audit before a 63013 block occurs.
When to Call a Specialist
If your WhatsApp Business Account has received a restriction notice (reducing your messaging tier or blocking outbound sends) following 63013 errors, a specialist can prepare and submit a formal account review request to Meta through the Meta Business Support portal, including documentation of your opt-in process, message samples, and compliance measures, which is the required process for reinstating full account access. A specialist is essential if you are building a high-volume WhatsApp messaging operation (tens of thousands of messages per day) and need to design a compliant messaging architecture that maintains a healthy quality rating, manages messaging tier limits, and implements the opt-in and opt-out management required by WhatsApp's policy. You should also seek specialist help if your business operates in an industry that WhatsApp's policies treat as restricted (financial services, healthcare, certain categories of e-commerce) where additional compliance requirements apply beyond the standard Business Messaging Policy.
Conclusion
Error 63013 is a WhatsApp policy violation that requires immediate review of your message content, opt-in practices, and sending rates, and may require a formal account review submission to Meta if a restriction has already been applied. If this error is blocking your production system, contact our team and we will diagnose and fix it within the hour.
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