Employee vs Employer Contributions
This 401(k) plan likely contains both employee deferrals and employer matching or discretionary contributions. A proper QDRO should specify whether the alternate payee will share in just the employee’s contributions, or also any vested employer match amounts.
If the employer match wasn’t fully vested at the time of divorce, the unvested portion may be forfeited. That needs to be addressed clearly to avoid disputes or confusion later.

