diff --git a/sdformat_for_mpi/sdf/1.0/distribution.sdf b/sdformat_for_mpi/sdf/1.0/distribution.sdf
index ef5240c..b9a5e0a 100644
--- a/sdformat_for_mpi/sdf/1.0/distribution.sdf
+++ b/sdformat_for_mpi/sdf/1.0/distribution.sdf
@@ -2,8 +2,8 @@
 <element name="distribution" required="0">
   <description>The distribution tag specifies the local ID of this gazebo and port of the remote server.</description>
 
- <attribute name="gazebo_local_ID" type="unsigned int" default="0" required="0">
-    <description>The ID of the gazebo.</description>
+ <attribute name="flag" type="int" default="0" required="0">
+    <description>The flag of the remote server.</description>
   </attribute>
 
   <include filename="gazeboid.sdf" required="1"/>
diff --git a/sdformat_for_mpi/sdf/1.2/distribution.sdf b/sdformat_for_mpi/sdf/1.2/distribution.sdf
index 924c2f5..b9a5e0a 100644
--- a/sdformat_for_mpi/sdf/1.2/distribution.sdf
+++ b/sdformat_for_mpi/sdf/1.2/distribution.sdf
@@ -2,18 +2,10 @@
 <element name="distribution" required="0">
   <description>The distribution tag specifies the local ID of this gazebo and port of the remote server.</description>
 
- <attribute name="gazebo_local_ID" type="unsigned int" default="0" required="0">
-    <description>The ID of the gazebo.</description>
-  </attribute>
-
-  <attribute name="flag" type="int" default="0" required="0">
+ <attribute name="flag" type="int" default="0" required="0">
     <description>The flag of the remote server.</description>
   </attribute>
 
-  <attribute name="port" type="int" default="0" required="0">
-    <description>the port of the remote port</description>
-  </attribute>
-
   <include filename="gazeboid.sdf" required="1"/>
 
 </element> <!-- distribution -->
diff --git a/sdformat_for_mpi/sdf/1.3/distribution.sdf b/sdformat_for_mpi/sdf/1.3/distribution.sdf
index 924c2f5..b9a5e0a 100644
--- a/sdformat_for_mpi/sdf/1.3/distribution.sdf
+++ b/sdformat_for_mpi/sdf/1.3/distribution.sdf
@@ -2,18 +2,10 @@
 <element name="distribution" required="0">
   <description>The distribution tag specifies the local ID of this gazebo and port of the remote server.</description>
 
- <attribute name="gazebo_local_ID" type="unsigned int" default="0" required="0">
-    <description>The ID of the gazebo.</description>
-  </attribute>
-
-  <attribute name="flag" type="int" default="0" required="0">
+ <attribute name="flag" type="int" default="0" required="0">
     <description>The flag of the remote server.</description>
   </attribute>
 
-  <attribute name="port" type="int" default="0" required="0">
-    <description>the port of the remote port</description>
-  </attribute>
-
   <include filename="gazeboid.sdf" required="1"/>
 
 </element> <!-- distribution -->
diff --git a/sdformat_for_mpi/sdf/1.4/distribution.sdf b/sdformat_for_mpi/sdf/1.4/distribution.sdf
index 924c2f5..b9a5e0a 100644
--- a/sdformat_for_mpi/sdf/1.4/distribution.sdf
+++ b/sdformat_for_mpi/sdf/1.4/distribution.sdf
@@ -2,18 +2,10 @@
 <element name="distribution" required="0">
   <description>The distribution tag specifies the local ID of this gazebo and port of the remote server.</description>
 
- <attribute name="gazebo_local_ID" type="unsigned int" default="0" required="0">
-    <description>The ID of the gazebo.</description>
-  </attribute>
-
-  <attribute name="flag" type="int" default="0" required="0">
+ <attribute name="flag" type="int" default="0" required="0">
     <description>The flag of the remote server.</description>
   </attribute>
 
-  <attribute name="port" type="int" default="0" required="0">
-    <description>the port of the remote port</description>
-  </attribute>
-
   <include filename="gazeboid.sdf" required="1"/>
 
 </element> <!-- distribution -->
diff --git a/sdformat_for_mpi/sdf/1.5/distribution.sdf b/sdformat_for_mpi/sdf/1.5/distribution.sdf
index 924c2f5..b9a5e0a 100644
--- a/sdformat_for_mpi/sdf/1.5/distribution.sdf
+++ b/sdformat_for_mpi/sdf/1.5/distribution.sdf
@@ -2,18 +2,10 @@
 <element name="distribution" required="0">
   <description>The distribution tag specifies the local ID of this gazebo and port of the remote server.</description>
 
- <attribute name="gazebo_local_ID" type="unsigned int" default="0" required="0">
-    <description>The ID of the gazebo.</description>
-  </attribute>
-
-  <attribute name="flag" type="int" default="0" required="0">
+ <attribute name="flag" type="int" default="0" required="0">
     <description>The flag of the remote server.</description>
   </attribute>
 
-  <attribute name="port" type="int" default="0" required="0">
-    <description>the port of the remote port</description>
-  </attribute>
-
   <include filename="gazeboid.sdf" required="1"/>
 
 </element> <!-- distribution -->
diff --git a/sdformat_for_mpi/sdf/1.6/distribution.sdf b/sdformat_for_mpi/sdf/1.6/distribution.sdf
index 924c2f5..b9a5e0a 100644
--- a/sdformat_for_mpi/sdf/1.6/distribution.sdf
+++ b/sdformat_for_mpi/sdf/1.6/distribution.sdf
@@ -2,18 +2,10 @@
 <element name="distribution" required="0">
   <description>The distribution tag specifies the local ID of this gazebo and port of the remote server.</description>
 
- <attribute name="gazebo_local_ID" type="unsigned int" default="0" required="0">
-    <description>The ID of the gazebo.</description>
-  </attribute>
-
-  <attribute name="flag" type="int" default="0" required="0">
+ <attribute name="flag" type="int" default="0" required="0">
     <description>The flag of the remote server.</description>
   </attribute>
 
-  <attribute name="port" type="int" default="0" required="0">
-    <description>the port of the remote port</description>
-  </attribute>
-
   <include filename="gazeboid.sdf" required="1"/>
 
 </element> <!-- distribution -->