add sample to saple inbound mappings

dynamic-mapping-extension/src/main/java/dynamic/mapping/processor/extension/external/ProcessorExtensionCustomAlarm.java

@@ -186,6 +186,9 @@ private ProcessingContext<byte[]> getBuildProcessingContext(ProcessingContext<by
 
                     ExternalIDRepresentation sourceId = c8yAgent.resolveExternalId2GlobalId(tenant,
                             new ID(mapping.externalIdType, substitute.value.toString()), context);
+                    // since the attributes identifying the MEA and Inventory requests are removed
+                    // during the design time, they have to be added before sending
+                    substitute.repairStrategy = RepairStrategy.CREATE_IF_MISSING;
                     if (sourceId == null && mapping.createNonExistingDevice) {
                         ManagedObjectRepresentation attocDevice = null;
                         Map<String, Object> request = new HashMap<String, Object>();