How to Delete or Create Credit Memo for the AR Invoices via WebService?

Summary:

We have an integration which are automatically creating AR and AP Invoices.

However the Integration created duplicate AR invoices. These invoices are now completed and posted to GL

Content (please ensure you mask any confidential information):

We need to DELETE the duplicate AR or raise a credit memo.

Can we Delete them via webservice

or Can we create a credit memo via webservice since bulk CM must be created.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):