Those located in Asia-Pacific will use the term Trust Account, where customers located in Europe will use the term Client Account. For more information on regional terminology, refer to this article.
When receiving funds back into the Client/Trust Account from a Creditor paid in error, we'd suggest raising an Expense Credit Note with the same Chart of Account Code as the original Expense Invoice. This is particularly important where there is a Property Budget in use. If an Income Invoice is used to receive the funds instead of an Expense Credit Note, this will show as Income Received in your Property Budget.
Please read Expense Credit Notes for steps on how to raise this.