A system for generating a work unit test ahead candidate list. A list is generated of all potential candidate systems for test ahead operations. A system in the potential candidate list is selected. It is determined whether any work unit in the selected system is waiting for short parts. Determining that no work unit in the selected system is waiting for short parts, a complexity score is calculated for each work unit in the selected system. The calculated complexity scores are added to a total system complexity score. It is then determined whether an override exists for a work unit in the selected system. Determining that an override does exist, the selected system is removed from the potential candidate list. A candidate list is generated from remaining systems in the potential candidate list. Then, the candidate list is outputted to provide recommendations for optimizing work unit test ahead operations.