Copilot drafts a database migration that removes a column. Unit tests pass, but the service has older deployed clients. Which validation is most relevant before accepting the migration?

1. Accept the change because database migration tools track whether a migration has run.
2. Run the same unit tests repeatedly to reduce uncertainty about the rollout.
3. Regenerate the migration with a more detailed explanation of the SQL syntax.
4. Check backward compatibility and rollout order using the consumers and deployment requirements.