# X_RELEASE_BRANCH_NAME

## Means

`scripts/release.ts` was run on a `release/*` branch that is not a `release/<major>.x` maintenance line

## Typical cause

`release/*` is the maintenance lines' namespace, and `ci.yml` and `release-tag.yml` run on `release/[0-9]+.x`. The 31.1.0 bump branch was `release/31.1.0`: CI ran on its push and `v31.1.0` was tagged on the PR head, off `main`'s history (#1054). Checked under `--dry-run` too; a detached HEAD names no branch and is never refused. A bump PR's branch is `chore/release-<version>`

## Fix

`git switch -c chore/release-<version>` — the fix line names the version being bumped to; then rerun the bump there

[CLI and verify](/error-codes#cli-and-verify)