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# Additional field details of InvoiceAdjustment

> Additional details of the fields of the InvoiceAdjustment object.

Additional details of the fields of the InvoiceAdjustment object.

## Id

The ID of this object. Every object has a unique identifier that Zuora automatically assigns upon creation. You use this ID later when you work with the object. For example, if you send an `amend()` call to modify an existing subscription, then you need to include the specific `Subscription` object's ID with the call.

The ID for the `InvoiceAdjustment` object is `InvoiceAdjustmentId` .

## Type

Indicates whether the adjustment credits or debits the invoice amount. Set the value to `Credit` to create a credit memo, which gives a credit on the invoice balance or lowers its total. Set the value to `Charge` to create a debit memo, which increases the balance.