> This page is for Docs. > For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://zuora.ferndocs.com/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://zuora.ferndocs.com/_mcp/server. # Unapply Credit Memo update fields > Use this reference to view all the fields associated with the unapply credit memo data dictionary. Use this reference to view all the fields associated with the unapply credit memo data dictionary. > **Note** > > Fields with an asterisk mark indicate mandatory fields. | Object | Field Name | Value | Required to unapply | Description | | --------------------------- | ------------------------------------- | ---------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------- | | Credit Memo | IsNewCreditMemo | True or False | This field is required when unapplying a Credit Memo. Enter "True" if applicable; otherwise, set the value to "False" or leave the cell blank. | Indicator Column marking the start of a new object | | Credit Memo | Credit Memo Key\* | string | Required for unapplying credit memo | The unique ID or number of a credit memo. For example, 8a8082e65b27f6c3015ba45ff82c7172 | | Credit Memo | Effective Date | string \ | Optional | The date when the credit memo is unapplied. | | Debit Memo | IsNewDebitMemos | True or False | This field is required when unapplying a Credit Memo amount on a Debit Memo. Enter "True" if applicable; otherwise, set the value to "False" or leave the cell blank. | Container for debit memos that the credit memo is unapplied from. The maximum number of debit memos is 1,000. | | Debit Memo | Debit Memos Amount\* | number \ | Required for unapplying amount of credit memo | The credit memo amount to be unapplied from the debit memo | | Debit Memo | Debit Memos Debit Memo Id\* | string | Required for unapplying credit memo on a debit memo | The unique ID of the debit memo that the credit memo is unapplied from | | Debit Memo>Debit Memo Items | IsNewDebitMemosItem | True or False | This field is required when unapplying a Credit Memo amount on specific Debit Memo Item. Enter "True" if applicable; otherwise, set the value to "False" or leave the cell blank. | Container for items. The maximum number of items is 1,000. | | Debit Memo Items | Debit Memos Items Amount\* | number \ | Required for unapplying amount from specific item | The amount that is unapplied from the specific item. | | Debit Memo Items | Debit Memos Items Credit Memo Item Id | string | Optional | The ID of the credit memo item. | | Debit Memo Items | Debit Memos Items Credit Tax Item Id | string | Optional | The ID of the credit memo taxation item. | | Debit Memo Items | Debit Memos Items Debit Memo Item Id | string | Optional | The ID of the debit memo item that the credit memo item is unapplied from. | | Debit Memo Items | Debit Memos Items Tax Item Id | string | Optional | The ID of the debit memo taxation item that the credit memo taxation item is unapplied from. | | Invoices | IsNewInvoices | True or False | This field is required when unapplying a Credit Memo amount on an Invoice. Enter "True" if applicable; otherwise, set the value to "False" or leave the cell blank. | Container for invoices that the credit memo is unapplied from. The maximum number of invoices is 1,000 | | Invoices | Invoices Amount\* | number \ | Required for unapplying amount of credit memo | The credit memo amount to be unapplied from the invoice | | Invoices | Invoices Invoice Id\* | string | Required for unapplying credit memo on an Invoice | The unique ID of the invoice that the credit memo is unapplied from | | Invoices>Invoice Items | IsNewInvoicesItem | True or False | This field is required when unapplying a Credit Memo amount on specific Invoice Item. Enter "True" if applicable; otherwise, set the value to "False" or leave the cell blank. | Container for items. The maximum number of items is 1,000. | | Invoice Items | Invoices Items Amount\* | number \ | Required for unapplying amount from specific item | The amount that is unapplied from the specific item. | | Invoice Items | Invoices Items Credit Memo Item Id | string | Optional | The ID of the credit memo item. | | Invoice Items | Invoices Items Credit Tax Item Id | string | Optional | The ID of the credit memo taxation item. | | Invoice Items | Invoices Items Invoice Item Id | string | Optional | The ID of the invoice item that the credit memo item is unapplied from. | | Invoice Items | Invoices Items Tax Item Id | string | Optional | The ID of the invoice taxation item that the credit memo taxation item is unapplied from. |