Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -ra19a676d1e67bb3e1aca9e9bba49727f9d5f8b38 -r8377b4e6ed494cbfc5dfc2bd9ad3c89b85b333cd
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision a19a676d1e67bb3e1aca9e9bba49727f9d5f8b38)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 8377b4e6ed494cbfc5dfc2bd9ad3c89b85b333cd)
@@ -206,6 +206,7 @@
         data[ msgSize++ ] = 0;
     }
 
+#ifndef DISABLE_ACK_ERRORS
     // if ACK required, add to pending ACK list
     if ( TRUE == ackReq )
     {
@@ -215,6 +216,7 @@
             SET_ALARM_WITH_1_U32_DATA( ALARM_ID_SOFTWARE_FAULT, SW_FAULT_ID_MSG_PENDING_ACK_LIST_FULL )
         }
     }
+#endif
 
     if ( FALSE == error )
     {