Use Latest Pull
The APS planning system attempts to find the resource combination that finishes the operation the latest, meaning closest to the operation's need date. The system attempts to plan the operation and leave the most available time that can be used by the remaining previous operations in the routing. If this process were not employed, the system would use the first resource combination from the resource groups specified on the operation that would leave enough time to plan all previous operations in the routing. This process could lead to less than desired resource allocation and cause orders planned later in the process to have a higher chance of being late.
The Use Latest Pull capability works with the Pull Iterations field. The system checks as many resource combinations as specified in the Pull Iterations field to find the best combination. If it doesn't find a resource combination that leaves enough time to plan all remaining operations, the pull-planning attempt fails and the system push plans the demand.