GDPR Art. 30 Records of Processing Activities: maintaining accuracy when engineering moves fast?

Article 30 requires controllers to maintain accurate, up-to-date records of processing activities. In practice, engineering teams ship new data pipelines weekly. Specific challenges: 1. How do you sync your RoPA with CI/CD? Manual review doesn't scale. 2. When a microservice changes its data flow (new third-party API, new data field), who triggers the RoPA update? 3. What tools are teams using to auto-discover processing activities vs. maintaining them by hand? 4. Art. 30(2) applies to processors too — how are you handling sub-processor changes in your SaaS contracts? Looking for automation patterns that actually work in practice.