Error mapping is supported in the DevaCmm/DevaCmmCtrl software component, so any software client that is written for the DevaCmm/DevaCmmCtrl interface, can use error mapping, on any of the Deva Devices supported by the DevaCmmCtrl driver set, i.e. the Deva 001, Deva 004 or Deva 037. The Deva I++ server is a client of DevaCmmCtrl, so can use the Error Mapping. Basically it depends on which Deva software interface your client application is written for. The only option that does not support Error mapping on a Deva 001 is a client written for the Deva 001 enclib direct interface.