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# Invoice Adjustments, Invoice Item Adjustments,Credit Balance Adjustments, and Payment Objects: maintenance

> Find additional details about maintenance mode for Invoice Adjustments, Invoice Item Adjustments, Credit Balance Adjustments, and related payment objects.

Find additional details about maintenance mode for Invoice Adjustments, Invoice Item Adjustments, Credit Balance Adjustments, and related payment objects.

Invoice Adjustments, Invoice Item Adjustments, Credit Balance Adjustments, and payment objects (Invoice Payment, Refund Invoice Payment) remain in maintenance mode. While we encourage all customers to transition to Invoice Settlement across the Zuora ecosystem, we understand that this takes time and has meaningful impacts on your business. As such, the Invoice Adjustment objects will remain in maintenance mode indefinitely, as no end-of-support or end-of-life date has been set.

The Invoice Settlement feature has been generally available since March 2021 in Zuora Billing Release 296. Invoice Settlement provides you with advanced payment management, credit and debit memos, and item level application.

* With the Unapplied Payments feature, you can create unapplied payments, apply unapplied payments on invoices and debit memos, unapply applied payments, and transfer payments.
* With the Credit and Debit Memos feature, you can issue memos to correct invoices and manage the balance due on a particular invoice or account.
* With the Invoice Item Settlement feature, you can apply payments at the line-item level.

There are five relevant APIs. These APIs too will remain in maintenance mode indefinitely, as no end-of-support or end-of-life date has been set:

* [Invoice Adjustments](https://developer.zuora.com/v1-api-reference/older-api/tag/Invoice-Adjustments/)
* [Invoice Item Adjustments](https://developer.zuora.com/v1-api-reference/older-api/tag/Invoice-Item-Adjustments/)
* [Credit Balance Adjustments](https://developer.zuora.com/v1-api-reference/older-api/tag/Credit-Balance-Adjustments/)
* [InvoicePayment](https://developer.zuora.com/v1-api-reference/older-api/tag/Invoice-Payments/)
* [RefundInvoicePayment](https://developer.zuora.com/v1-api-reference/older-api/tag/Refund-Invoice-Payments/)