If you have a prepaid Service Contract and the Invoice Period is set to anything greater than Month then you will have a line created on the invoice for each month.

IE If Invoice Period = Year then I will have a Service Invoice generated with 12 lines on it. A customer does not need to see an invoice with 12 lines, they need one line with the start and end date for the invoice.
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Ideas Administrator

Thank you for this suggestion! Currently this is not on our roadmap. We are tracking this idea and if it gathers more votes and comments we will consider it in the future.

Best regards,
Business Central Team