When getting a single invoice via zohoapis.com/books/v3/invoices/:invoiceId, the response includes custom fields of the customer under the key customer_custom_fields.
However, when getting a creditnote zohoapis.com/books/v3/creditnotes/:creditNoteId these customer_custom_fields are missing.
I wonder why this is and if there is a setting that allows including the customer custom fields in the creditnotes response.