diff --git a/src/iec61850/client/ied_connection.c b/src/iec61850/client/ied_connection.c
index 3eb1d371..89612b7f 100644
--- a/src/iec61850/client/ied_connection.c
+++ b/src/iec61850/client/ied_connection.c
@@ -3134,6 +3134,122 @@ exit_function:
     return isDeleted;
 }
 
+static void
+deleteNamedVariableListHandler(uint32_t invokeId, void* parameter, MmsError mmsError, bool success)
+{
+    IedConnection self = (IedConnection) parameter;
+
+    IedConnectionOutstandingCall call = iedConnection_lookupOutstandingCall(self, invokeId);
+
+    if (call) {
+
+        IedConnection_GenericServiceHandler handler = (IedConnection_GenericServiceHandler)call->callback;
+
+        IedClientError err = iedConnection_mapMmsErrorToIedError(mmsError);
+
+        if (err == IED_ERROR_OK) {
+            if (success == false)
+                err = IED_ERROR_ACCESS_DENIED;
+        }
+
+        handler(invokeId, call->callbackParameter, err);
+
+        iedConnection_releaseOutstandingCall(self, call);
+    }
+    else {
+        if (DEBUG_IED_CLIENT)
+            printf("IED_CLIENT: internal error - no matching outstanding call!\n");
+    }
+}
+
+uint32_t
+IedConnection_deleteDataSetAsync(IedConnection self, IedClientError* error, const char* dataSetReference,
+       IedConnection_GenericServiceHandler handler, void* parameter)
+{
+    *error = IED_ERROR_OK;
+
+    char domainIdBuf[65];
+    char *domainId = domainIdBuf;
+    char itemId[DATA_SET_MAX_NAME_LENGTH + 1];
+    bool isAssociationSpecific = false;
+    bool isDeleted = false;
+
+    int dataSetReferenceLength = strlen(dataSetReference);
+
+    if (dataSetReference[0] != '@') {
+        if ((dataSetReference[0] == '/')
+                || (strchr(dataSetReference, '/') == NULL)) {
+            domainId = NULL;
+
+            if (dataSetReference[0] == '/')
+                strcpy(itemId, dataSetReference + 1);
+            else
+                strcpy(itemId, dataSetReference);
+        }
+        else {
+
+            if (MmsMapping_getMmsDomainFromObjectReference(dataSetReference,
+                    domainId) == NULL) {
+                *error = IED_ERROR_OBJECT_REFERENCE_INVALID;
+                return 0;
+            }
+
+            const char *itemIdString = dataSetReference + strlen(domainId) + 1;
+
+            if (strlen(itemIdString) > DATA_SET_MAX_NAME_LENGTH) {
+                *error = IED_ERROR_OBJECT_REFERENCE_INVALID;
+                return 0;
+            }
+
+            StringUtils_copyStringToBuffer(itemIdString, itemId);
+
+            StringUtils_replace(itemId, '.', '$');
+        }
+    }
+    else {
+        if (dataSetReferenceLength > 33) {
+            *error = IED_ERROR_OBJECT_REFERENCE_INVALID;
+            return 0;
+        }
+
+        strcpy(itemId, dataSetReference + 1);
+
+        isAssociationSpecific = true;
+    }
+
+    MmsError mmsError;
+
+    if ((domainId == NULL) || (itemId == NULL)) {
+        *error = IED_ERROR_OBJECT_REFERENCE_INVALID;
+        return 0;
+    }
+
+    IedConnectionOutstandingCall call = iedConnection_allocateOutstandingCall(self);
+
+    if (call == NULL) {
+        *error = IED_ERROR_OUTSTANDING_CALL_LIMIT_REACHED;
+        return 0;
+    }
+
+    call->callback = handler;
+    call->callbackParameter = parameter;
+    call->invokeId = 0;
+
+    if (isAssociationSpecific) {
+        MmsConnection_deleteAssociationSpecificNamedVariableListAsync(self->connection, &(call->invokeId), &mmsError, itemId, deleteNamedVariableListHandler, self);
+    }
+    else {
+        MmsConnection_deleteNamedVariableListAsync(self->connection, &(call->invokeId), &mmsError, domainId, itemId, deleteNamedVariableListHandler, self);
+    }
+
+    if (*error != IED_ERROR_OK) {
+        iedConnection_releaseOutstandingCall(self, call);
+        return 0;
+    }
+
+    return call->invokeId;
+}
+
 LinkedList /* <char*> */
 IedConnection_getDataSetDirectory(IedConnection self, IedClientError* error, const char* dataSetReference, bool* isDeletable)
 {
diff --git a/src/iec61850/inc/iec61850_client.h b/src/iec61850/inc/iec61850_client.h
index 9d1946e9..b596b88f 100644
--- a/src/iec61850/inc/iec61850_client.h
+++ b/src/iec61850/inc/iec61850_client.h
@@ -1,7 +1,7 @@
 /*
  *  iec61850_client.h
  *
- *  Copyright 2013-2019 Michael Zillgith
+ *  Copyright 2013-2021 Michael Zillgith
  *
  *  This file is part of libIEC61850.
  *
@@ -1775,6 +1775,26 @@ IedConnection_createDataSet(IedConnection self, IedClientError* error, const cha
 LIB61850_API bool
 IedConnection_deleteDataSet(IedConnection self, IedClientError* error, const char* dataSetReference);
 
+/**
+ * \brief delete a deletable data set at the connected server device - async version
+ *
+ * This function deletes a data set at the server. The parameter dataSetReference is the name of the data set
+ * to delete. It is either in the form LDName/LNodeName.dataSetName or @dataSetName for an association specific data set.
+ *
+ * The data set was deleted successfully when the callback parameter "error" is IED_ERROR_OK. Otherwise the "error"
+ * parameter contains a particular error code.
+ *
+ * \param connection the connection object
+ * \param error the error code if an error occurs
+ * \param dataSetReference object reference of the data set
+ * \param handler the callback handler that is called when the response is received or timeout
+ * \param parameter user provided parameter that is passed to the callback handler
+ *
+ * \return the invoke ID of the request
+ */
+LIB61850_API uint32_t
+IedConnection_deleteDataSetAsync(IedConnection self, IedClientError* error, const char* dataSetReference,
+        IedConnection_GenericServiceHandler handler, void* parameter);
 
 /**
  * \brief returns the object references of the elements of a data set
diff --git a/src/mms/inc_private/mms_client_internal.h b/src/mms/inc_private/mms_client_internal.h
index 4dd10ded..57243230 100644
--- a/src/mms/inc_private/mms_client_internal.h
+++ b/src/mms/inc_private/mms_client_internal.h
@@ -291,7 +291,7 @@ mmsClient_createDeleteNamedVariableListRequest(long invokeId, ByteBuffer* writeB
         const char* domainId, const char* listNameId);
 
 LIB61850_INTERNAL bool
-mmsClient_parseDeleteNamedVariableListResponse(ByteBuffer* message, uint32_t* invokeId);
+mmsClient_parseDeleteNamedVariableListResponse(ByteBuffer* message, uint32_t* invokeId, long* numberDeleted, long* numberMatched);
 
 LIB61850_INTERNAL void
 mmsClient_createDeleteAssociationSpecificNamedVariableListRequest(
diff --git a/src/mms/iso_mms/client/mms_client_connection.c b/src/mms/iso_mms/client/mms_client_connection.c
index e4bd2ae5..d7eacfd0 100644
--- a/src/mms/iso_mms/client/mms_client_connection.c
+++ b/src/mms/iso_mms/client/mms_client_connection.c
@@ -804,9 +804,19 @@ handleAsyncResponse(MmsConnection self, ByteBuffer* response, uint32_t bufPos, M
         else {
             bool success = false;
 
-            if (mmsClient_parseDeleteNamedVariableListResponse(response, NULL))
+            long numberMatched = 0;
+            long numberDeleted = 0;
+
+            if (mmsClient_parseDeleteNamedVariableListResponse(response, NULL, &numberDeleted, &numberMatched))
                 success = true;
 
+            if (numberMatched == 0)
+                err = MMS_ERROR_ACCESS_OBJECT_NON_EXISTENT;
+            else {
+                if (numberDeleted == 0)
+                    err = MMS_ERROR_ACCESS_OBJECT_ACCESS_DENIED;
+            }
+
             handler(outstandingCall->invokeId, outstandingCall->userParameter, err, success);
         }
     }
diff --git a/src/mms/iso_mms/client/mms_client_named_variable_list.c b/src/mms/iso_mms/client/mms_client_named_variable_list.c
index 3ca329e1..74a0da1b 100644
--- a/src/mms/iso_mms/client/mms_client_named_variable_list.c
+++ b/src/mms/iso_mms/client/mms_client_named_variable_list.c
@@ -117,7 +117,7 @@ mmsClient_createDeleteAssociationSpecificNamedVariableListRequest(
 }
 
 bool
-mmsClient_parseDeleteNamedVariableListResponse(ByteBuffer* message, uint32_t* invokeId)
+mmsClient_parseDeleteNamedVariableListResponse(ByteBuffer* message, uint32_t* invokeId, long* numberDeleted, long* numberMatched)
 {
     MmsPdu_t* mmsPdu = 0;
 
@@ -138,11 +138,10 @@ mmsClient_parseDeleteNamedVariableListResponse(ByteBuffer* message, uint32_t* in
                 DeleteNamedVariableListResponse_t* response =
                         &(mmsPdu->choice.confirmedResponsePdu.confirmedServiceResponse.choice.deleteNamedVariableList);
 
-                long numberDeleted;
+                asn_INTEGER2long(&(response->numberDeleted), numberDeleted);
+                asn_INTEGER2long(&(response->numberMatched), numberMatched);
 
-                asn_INTEGER2long(&(response->numberDeleted), &numberDeleted);
-
-                if (numberDeleted == 1)
+                if (*numberDeleted == 1)
                     retVal = true;
             }
         }