# Update credit memo attachment

## Updates an existing credit memo attachment.

> Updates the properties (name, description) of an existing credit memo attachment.\
> Only the fields provided in the request body will be updated.\
> The file content cannot be changed; to replace the file, delete and recreate the attachment.

```json
{"openapi":"3.0.1","info":{"title":"Marketplace API","version":"5.0.5520-g4a7cef27"},"servers":[{"url":"https://api.platform.softwareone.com"}],"paths":{"/public/v1/billing/credit-memos/{creditMemoId}/attachments/{id}":{"put":{"tags":["CreditMemoAttachments"],"summary":"Updates an existing credit memo attachment.","description":"Updates the properties (name, description) of an existing credit memo attachment.\nOnly the fields provided in the request body will be updated.\nThe file content cannot be changed; to replace the file, delete and recreate the attachment.","parameters":[{"name":"creditMemoId","in":"path","description":"The ID of the credit memo to which the attachment belongs.","required":true,"schema":{"type":"string"}},{"name":"id","in":"path","description":"The ID of the attachment to update.","required":true,"schema":{"type":"string"}}],"requestBody":{"description":"The updated attachment details.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/CreditMemoAttachment"}},"text/json":{"schema":{"$ref":"#/components/schemas/CreditMemoAttachment"}},"application/*+json":{"schema":{"$ref":"#/components/schemas/CreditMemoAttachment"}}}},"responses":{"200":{"description":"OK","content":{"application/json":{"schema":{"$ref":"#/components/schemas/CreditMemoAttachment"}}}},"403":{"description":"Forbidden","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ProblemDetails"}}}},"404":{"description":"Not Found","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ProblemDetails"}}}}}}}},"components":{"schemas":{"CreditMemoAttachment":{"type":"object","properties":{"audit":{"allOf":[{"$ref":"#/components/schemas/PlatformObjectAudit"}]},"$meta":{"allOf":[{"$ref":"#/components/schemas/PlatformMetadata"}],"nullable":true},"revision":{"type":"integer","format":"int32"},"name":{"type":"string","description":"Name of the attachment."},"type":{"allOf":[{"$ref":"#/components/schemas/BillingAttachmentType"}],"description":"Specifies the type of the attachment, such as input, output, or general attachment."},"filename":{"type":"string","description":"Represents the name of the file associated with the attachment."},"size":{"type":"integer","description":"Indicates the size of the file in bytes.","format":"int64","nullable":true},"contentType":{"type":"string","description":"Represents the MIME type of the file content."},"description":{"type":"string","description":"Provides a description of the attachment."},"isDeleted":{"type":"boolean","description":"Indicates whether the attachment has been marked as deleted."},"id":{"type":"string","description":"The unique identifier of the attachment."},"creditMemo":{"type":"object","allOf":[{"$ref":"#/components/schemas/CreditMemoRef"}]},"isExternal":{"type":"boolean","description":"Indicates whether the attachment is stored externally"}},"additionalProperties":false,"description":"Represents an attachment associated with a credit memo in the billing system."},"PlatformObjectAudit":{"type":"object","properties":{"created":{"allOf":[{"$ref":"#/components/schemas/PlatformObjectEvent"}],"nullable":true},"updated":{"allOf":[{"$ref":"#/components/schemas/PlatformObjectEvent"}],"nullable":true}},"additionalProperties":false},"PlatformObjectEvent":{"type":"object","properties":{"at":{"type":"string","format":"date-time","nullable":true},"by":{"allOf":[{"$ref":"#/components/schemas/PlatformIdentity"}],"nullable":true}},"additionalProperties":false},"PlatformIdentity":{"type":"object","properties":{"id":{"type":"string"},"audit":{"allOf":[{"$ref":"#/components/schemas/PlatformObjectAudit"}]},"$meta":{"allOf":[{"$ref":"#/components/schemas/PlatformMetadata"}],"nullable":true},"name":{"type":"string"},"icon":{"type":"string","nullable":true},"revision":{"type":"integer","format":"int32"}},"additionalProperties":false},"PlatformMetadata":{"type":"object","properties":{"omitted":{"type":"array","items":{"type":"string"}}},"additionalProperties":false},"BillingAttachmentType":{"enum":["Attachment","Input","Output"],"type":"string","description":"Represents the type of billing attachment."},"CreditMemoRef":{"type":"object","properties":{"revision":{"type":"integer","format":"int32"},"id":{"type":"string","description":"The unique identifier of the credit memo."}},"additionalProperties":false,"description":"Represents a credit memo in the billing system."},"ProblemDetails":{"type":"object","properties":{"type":{"type":"string","nullable":true},"title":{"type":"string","nullable":true},"status":{"type":"integer","format":"int32","nullable":true},"detail":{"type":"string","nullable":true},"instance":{"type":"string","nullable":true}},"additionalProperties":{}}}}}
```


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