3641831 - Item Quantity Schedule is Overwritten When New Line is Added to the Same Line Item in an Opportunity.

• A user adds a new schedule line for a future year (e.g., 2026) to an existing product line item that already has a quantity schedule.
• The system does not create a completely new, independent schedule line.
• Instead, the system overwrites or consolidates the existing schedule lines, causing the previous entries to be lost or modified.

SAP Cloud for Customer

1. Open an existing Opportunity (or Sales Quote/Order) in the C4C UI.
2. Navigate to the Products facet and select a line item that already has a quantity schedule.
3. Go to the Item Quantity Schedule sub-tab. Note the existing schedule lines (e.g., a line for 2025).
4. Click Add or edit the schedule to add a new entry for a future period (e.g., a new line for 2026).
5. Save the changes.
6. The user expects to see both the 2025 and 2026 lines as separate, independent entries.
7. The system instead displays a consolidated schedule, often replacing the original 2025 line with the new 2026 entry or a combined total.

This is the expected and standard system behavior in SAP C4C. The Item Quantity Schedule is designed to manage a single, consolidated delivery plan for a specific product line item. The system enforces data integrity by ensuring that the sum of all schedule lines always equals the total quantity of the parent line item.

When a new schedule line is added, the system does not view it as a separate plan. It triggers a re-evaluation of the entire schedule, consolidating the new entry with the existing data to maintain a single, accurate view of the delivery plan.

In case of migration: The observed exception, where a manual line does not overwrite a migrated line, is a result of data inconsistencies from a migration process and is not a feature of the standard UI.

To manage separate and independent delivery schedules for the same product, the user must create separate line items in the sales document.

Correct Process:

1. Create the first line item for the product and set its total quantity and schedule (e.g., Line Item 10 for 2025).
2. Add the same product as a new, separate line item (e.g., Line Item 20 for 2026).
3. Set the total quantity and create a new, independent schedule for this second line item.

This approach ensures that each year's schedule is treated as a distinct business transaction, preventing the system from consolidating or overwriting the schedules.

Item Quantity Schedule, Overwritten, Scheduling, Opportunity, Item Quantity, Line Item, Item 10, Item 20 , Quantity Schedule , KBA , LOD-CRM-OPP , Opportunity Management , Problem