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Using Different Projection Methods
The projection method determines the schedule profile when you add an Opportunity Product and enter the schedule parameters.
If this field is not visible when you add the Opportunity Product, it’s because your system administrator has defined a default projection method, and you do not need to select a value manually.
However, when this field is visible, you can select one of up to three values:
Straight Line
This is the most commonly used projection method and may be set as the default in your organization. It divides the Total Price of the Opportunity Product equally across the number of schedules.
Pro-rated
This projection method sets a value for the first month based on the Start Date. We assume thirty days in the month; if the Start Date is the 18th, the first schedule will be the value for 12 days. If we also assume that you entered 12 months for the # Schedules, the first schedule is followed by eleven schedules of equal value. The balance (18 days) is added to a final schedule at the end, i.e., a thirteenth schedule. In other words, the app pro-rates the first month and adds the balance to a final schedule at the end.
S-curve
The S-curve projection method distributes the Total Price across schedules based on a normal distribution curve. When you look at the revenue profile cumulatively, you see an s-curve.