Axel Martel, Cloud Kicks' sales assistant, has generated a billing schedule and wants to adjust it.

Modify schedule template
Axel generated a 20/30/50 billing schedule from an Opportunity.
Finally, after discussion with his customer, Axel needs to modify his schedule model on an exceptional basis.
The condition being exceptional and for this customer only, he does not wish to modify the billing schedule template from the "Schedule" object.
Here's how Frisbii helps him cover his use case.
Add a milestone
Axel clicks on the Modify button on the LWC component.

A new window opens, showing the 3 draft invoices broken down by milestone:

Axel clicks on Add an invoice :
By default, the new milestone contains the following information:Invoice name: To be created. The name will be automatically assigned after registration.
Invoice date = current date
Amount excl. VAT: please enter the amount
Amount incl. VAT: automatically calculated
Sub-Type : Down Payment

To correct the information, Axel clicks on the pencil:

The following fields can be modified using the pencil:
Invoice date
Amount excl. VAT
Subtype : Please note : "Balance" should be entered instead of "Down Payment".
In a previous article, it was described that a schedule can only contain one invoice of the sub-type Balance. So Axel also modifies the Invoice that initially corresponded to the Balance invoice to fill in "Down Payment".

At this stage, the Opportunity is overbilled, following the addition of the last milestone.
Before saving, Axel must adjust the Amount excl. VAT of an invoice to obtain a 100% invoicing plan. Axel adapts the amounts, and obtains a balanced payment schedule.
Axel is satisfied with the result and clicks on "Save": 
- This action creates a new milestone to bill this Opportunity.
- This milestone has not been added to the 20/30/50 billing schedule template.
- The Opportunity now contains 4 invoices instead of 3.
Note : invoices issued cannot be modified.
Delete a milestone
It is also possible to delete a milestone, exceptionally, without modifying the billing schedule template from the "Schedules" object. The modification will only be applied to this Opportunity.
Here are the steps to follow:
Click on Modify on the LWC component.

A new window opens, listing draft invoices by milestone:

Click on the grey cross to Delete a milestone :

At this stage, the Opportunity is underbilled and does no longer cover 100% of the Opportunity.
To correct information, the following fields can be modified using the pencil:

Invoice date
Amount excl. VAT
Sub-Type
Save
This action deletes a milestone on this Opportunity. This milestone has not been removed from the billing schedule template. Opportunity now contains 3 invoices instead of 4.
Modify invoice amount
Would you like to change your invoice amounts?
For example, to issue invoices without decimals.
You can do so via the Modify button .
Note : In accordance with regulations, invoices issued cannot be modified.
Click on Modify on the LWC component.

A new window opens with draft invoices broken down by milestone:

Click on the pencil to modify the Amount before tax, and in our example, round off the amount to remove the decimals:

Repeat the operation on the other draft invoices. Only issued invoices cannot be modified.
Then Save, a message will tell you if you are over or undercharged for the Opportunity amount:

Result: your invoices have been modified (not replaced) with these new amounts.
An icon
reminds you that invoiced amounts are over- or under-invoiced in relation to the opportunity amount: 
Modify Invoice Sub-Type (Down payment / Balance)
Would you like to change the down payment/balance sub-type of your invoices?
It is not possible to modify the sub-type from the invoice. You must use the Modify button in the LWC component of Opportunity or Quotation.
Note : In accordance with regulations, issued invoices cannot be modified.
Click on Modify on the LWC component.
A new window opens with draft invoices broken down by milestone.
Click on the pencil to change the subtype.
Please note: You need to type "Balance" instead of "Down Payment", or vice versa.
Please note that in a previous article, it was described that a schedule can only contain one invoice of sub-type Balance.
Then save, and your invoice will include the new sub-type.