Using the REST API, is it possible to PATCH a record which has multiple fields in its main key? An example is DelAddrVc, whose main key consists of CustCode and DelCode. Looking at the manual, PATCHing a record requires the record "identifier" to be inside the URI, per the example below:


http://hostname.domain.top:web_port/api/1/IVVc/10000014?set_row_field.0.Quant=100

In UK sample data for example, I would like to PATCH delivery address with DelCode 001/1 for CustCode 001. (This might uncover another interesting point - what happens when the code contains a / ?)