WhatsApp Embedded Signup Troubleshooting

Fast troubleshooting steps for common onboarding and coexistence flow issues.

1. Confirm the correct feature flag and session info version in signup launch extras.
2. Verify callback origin and event payload parsing in the parent window listener.
3. Check business and partner prerequisites before launching the flow.
4. Inspect webhook ingestion logs for missing required coexistence events.
5. For switching/credit-line issues, run partner migration and support playbooks.