diff --git a/src/avtas/lmcp/lmcpgen/MDM.DTD b/src/avtas/lmcp/lmcpgen/MDM.DTD
index e04b40e..1594c04 100644
--- a/src/avtas/lmcp/lmcpgen/MDM.DTD
+++ b/src/avtas/lmcp/lmcpgen/MDM.DTD
@@ -43,6 +43,7 @@
     Extends CDATA ''
     Name CDATA #REQUIRED
     Series CDATA ''
+    ID CDATA ''
   >
 
 <!--- Enumeration definition -->
diff --git a/src/avtas/lmcp/lmcpgen/MDMReader.java b/src/avtas/lmcp/lmcpgen/MDMReader.java
index b2cb152..b7cd682 100644
--- a/src/avtas/lmcp/lmcpgen/MDMReader.java
+++ b/src/avtas/lmcp/lmcpgen/MDMReader.java
@@ -108,9 +108,21 @@ public static MDMInfo getFromXML(Node node) throws Exception {
         }
 
         info.structs = fillStructs(XMLUtil.getList(node, "StructList", "Struct"), info);
+
+        // Determine start ID by looking for the maximum specified ID (0 by default)
+        for (int i = 0; i < info.structs.length; i++) {
+            startId = Math.max(startId, info.structs[i].id + 1);
+        }
+
+        // Assign IDs for structs that do not yet have one
+        int idOffset = 0;
         for (int i = 0; i < info.structs.length; i++) {
-            info.structs[i].id = startId + i;
+            if (info.structs[i].id < 1) {
+                info.structs[i].id = startId + idOffset;
+                idOffset++;
+            }
         }
+
         info.enums = fillEnums(XMLUtil.getList(node, "EnumList", "Enum"), info);
 
         return info;
@@ -154,6 +166,12 @@ public static StructInfo[] fillStructs(Node[] list, MDMInfo mdm) throws Exceptio
                 struct.comment = getComment(list[i]).replaceAll("[\n\r\f]+", "");
             }
 
+            // Optional explicit ID
+            String idStr = XMLUtil.getAttribute(list[i], "ID", "");
+            if (!idStr.isEmpty()) {
+                struct.id = Integer.parseInt(idStr);
+            }
+
 
             Node[] fieldNodes;
             fieldNodes = XMLUtil.getChildren(list[i], "Field");