Index: NVDataMgmt.c
===================================================================
diff -u -r45f39d237e109f91b4b7e40fdb2dc00bd673eef0 -r1c6b2c1fcaf8beaee746f59c744af5097197fa9e
--- NVDataMgmt.c	(.../NVDataMgmt.c)	(revision 45f39d237e109f91b4b7e40fdb2dc00bd673eef0)
+++ NVDataMgmt.c	(.../NVDataMgmt.c)	(revision 1c6b2c1fcaf8beaee746f59c744af5097197fa9e)
@@ -289,8 +289,9 @@
     U16 crc;                                                                                                    ///< Disinfection date CRC
 } LAST_DISINFECTION_RECORD_T;
 
-// ********** Calibration data struts **********
+// ********** Calibration data structures **********
 
+/// DG calibration groups structure
 typedef struct
 {
     DG_PRES_SENSORS_CAL_RECORD_T presSensorsCalRecord;                                                          ///< DG pressure sensors.
@@ -304,7 +305,7 @@
     DG_DRAIN_LINE_VOLUME_T       drainLineVolume;                                                               ///< DG drain line volume.
     DG_PRE_RO_PURGE_VOLUME_T     preROPurgeVolume;                                                              ///< DG RO purge volume.
     DG_RESERVOIR_VOLUME_T        reservoir[ NUM_OF_CAL_DATA_RSRVRS ];                                           ///< DG reservoirs volume.
-    DG_GENERIC_VOLUME_T          genericVolume[ 4 ];                                                            ///< DG generic volume.
+    DG_GENERIC_VOLUME_T          genericVolume[ 4 ];                                                            ///< DG generic volume (magic number because the value is unknown).
     DG_ACID_CONCENTRATES_T       acidConcentrates;                                                              ///< DG acid concentrates.
     DG_BICARB_CONCENTRATES_T     bicarbConcentrates;                                                            ///< DG bicarb concentrates.
     DG_FILTERS_CAL_RECORD_T      filters;                                                                       ///< DG filters.
@@ -327,6 +328,14 @@
     U16 crc;                                                                                                    ///< CRC for the DG system group structure.
 } DG_SYSTEM_GROUP_T;
 
+/// DG service record structure
+typedef struct
+{
+    DG_LAST_SERVICE_RECORD_T dgLastServiceRecord;                                                               ///< DG last service record.
+    U08 padding[ 0 ];                                                                                           ///< DG last service group padding.
+    U16 crc;                                                                                                    ///< CRC for the DG last service structure.
+} DG_LAST_SERVICE_GROUP_T;
+
 /// DG scheduler record structure
 typedef struct
 {