Prepare for Japan's mandatory eCTD v4.0 submissions by 2026 with this expert-verified checklist. Understand PMDA submission steps, lifecycle changes, controlled vocabulary updates, and best practices for a seamless transition. Leverage AI-powered tools like Freyr's freya.fusion to automate, validate, and optimize every step of the process. https://japan.freyrsolutions.com/blogs/japan-ectd-v4-0-submission-checklist-a-step-by-step-guide