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public Mono<JsonNode> updateDeviceObject(InputObservation inputObservation, String orgId, String deviceId, String token) throws Exception {
        try {
            //Search for the deviceID, if deviceId exists and productDetails payload are not null
            JsonNode prodNode = inputObservation.getProductDetails()==null  ? null : inputObservation.getProductDetails();
            if ((deviceId != null && prodNode != null)) {
                return deviceService.searchDevice(orgId, deviceId, token).flatMap(searchResp -> {
                    org.hl7.fhir.r4.model.Device device = FHIRUtils.getFHIRResource(searchResp.toString(),
                            org.hl7.fhir.r4.model.Device.class);
                    devicePayload(prodNode, device);
                    try {
                        return deviceService.mapPatientToDevice(orgId, deviceId, token, device);
                    } catch (Exception e) {
                        throw new RuntimeException(e);
                    }
                });
                //create a deviceID if device id not found and productDetails payload are not null
            } else if ((deviceId == null && prodNode != null)) {
                Device device = new Device();
                //if product details are empty, wont create a device resource
                devicePayload(prodNode, device);
                return deviceService.createDevice(orgId, token, device);
                //No updates required when the productDetails payload are empty. The existing details will come as it is.
            } else {
                ObjectMapper mapper=new ObjectMapper();
                JsonNode actualObj=mapper.readTree(AppConstants.NO_UPDATES_REQUIRED);
                return Mono.just(actualObj);
            }
        } catch (Exception e) {
            throw new RuntimeException();
        }
        }