Universal Containers has multiple active Sales Agreements for the current quarter of their top tier...

When multiple active sales agreements contain the same product for the same account and time period, you can use custom logic to determine which sales agreement to link the order to. You can use the Sales Agreement Order Linking Apex class to implement your custom logic and override the default behavior of linking the order to the sales agreement that was activated last1. References:

Sales Agreements and Forecasting in Manufacturing Cloud

Set Up and Configure Sales Agreements