GitHub Code Suggestion Application Limitations

Applying code suggestions in bulk during GitHub code review has several limitations. These include: invalid suggestions (no code changes), closed pull requests, viewing a subset of changes, only one suggestion per line in a batch, inability to apply suggestions to deleted lines, suggestions already applied or marked resolved, suggestions from pending reviews, suggestions on multi-line comments, inability to apply while the pull request is queued to merge, and an unspecified 'cannot apply suggestion right now' error.