NTO has implemented salesforce for its sales users. The opportunity management in salesforce is implemented as follows:

1.Sales users enter their opportunities in salesforce for forecasting and reporting purposes.

2.NTO has a product pricing system (PPS) that is used to update opportunity amount field on opportunities on a daily basis.

3.PPS is the trusted source within the NTO for opportunity amount.

4.NTO uses opportunity forecast for its sales planning and management.

Sales users have noticed that their updates to the opportunity amount field are overwritten when PPS updates their opportunities.

How should a data architect address this overriding issue?