Worked on enhancing relationship management reliability in the ash-project/ash repository by implementing robust multi-record error reporting for invalid inputs. Leveraging Elixir for backend development and comprehensive testing, the developer introduced mechanisms to surface errors across various operations, including sequential and bulk relationship management workflows. This approach reduced debugging time and improved data integrity by ensuring that all invalid records are reported consistently. The work included adding thorough tests to validate the new error handling behavior, fixing the eager error evaluation path, and ensuring cross-operation consistency, thereby providing a stable foundation for future enhancements in relationship management functionality.