You have 2 commits incorrectly signed off. To fix, first ensure you have a local copy of your branch by [checking out the pull request locally via command line](https://help.github.com/en/github/collaborating-with-issues-and-pull-requests/checking-out-pull-requests-locally). Next, head to your local branch and run: ```bash git rebase HEAD~3 --signoff ``` Now your commits will have your sign off. Next run ```bash git push --force-with-lease origin jprakash-db/arrow-optim ``` Commit sha: [0cbfae6](https://github.com/databricks/databricks-sql-python/pull/638/commits/0cbfae6be0c0003c3afe5880fffe723668bb606a), Author: Jothi Prakash, Committer: Jothi Prakash; The sign-off is missing. Commit sha: [8cdfd88](https://github.com/databricks/databricks-sql-python/pull/638/commits/8cdfd88014de53ba654a74f4f3a5c9a2bf0c4a7f), Author: Jothi Prakash, Committer: Jothi Prakash; The sign-off is missing.