Returns vendor

I need to get the returns vendor code for the vendors of certain purchase organisation.From LFM1 table I got which all vendors are marked as returns vendor.I checked XK03 tcode to get the data.I need to know whether both vendor id and return vendor code are the same or can be different?How to extract the whole returns vendor code with respect to a Pur. Org. in one go other than using the tcode XK03 for each vendor id ?