By default, billing starts on the contract start date associated with each item.To override the billing start date manually, enable the Adjust billing start option. A date picker appears where you can select the desired start date.
When you adjust the billing start, the original date is shown with a strikethrough in the product list, and the new date is highlighted. This provides a clear visual indicator of the change being applied.
If an active subscription contains new items in Draft status (e.g., after adding new products), the activation dialog can be opened again to activate those items individually. In this case, the Activate all items option is not shown.
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