I got this error when I was burning a dvd what does it mean?

1A23-0009-9130-2237-9735-1723

Windows XP 5.1
IA32
WinAspi: -
ahead WinASPI: File ‘C:\Program Files\Ahead\Nero\Wnaspi32.dll’: Ver=2.0.1.74, size=164112 bytes, created 10/26/2004 7:35:34 PM
Nero API version: 6.6.0.12
Using interface version: 6.3.1.4
Installed in: C:\Program Files\Ahead\Nero
Application: ahead\Nero - Burning Rom
Internal Version: 6, 6, 0, 12c

Recorder: <MAD DOG MD-16XDVD9A4> Version: 1.F0 - HA 1 TA 0 - 6.6.0.12
Adapter driver: <atapi> HA 1
Drive buffer : 2048kB
Bus Type : default (0) -> ATAPI, detected: ATAPI

=== Scsi-Device-Map ===
DiskPeripheral : WDC WD1600JB-00GVC0 atapi Port 0 ID 0 DMA: On
CdRomPeripheral : MAD DOG MD-16XDVD9A4 atapi Port 1 ID 0 DMA: On

=== CDRom-Device-Map ===
MAD DOG MD-16XDVD9A4 D: CDRom0

AutoRun : 1
Excluded drive IDs:
WriteBufferSize: 74448896 (0) Byte
ShowDrvBufStat : 0
BUFE : 0
Physical memory : 511MB (523760kB)
Free physical memory: 116MB (119100kB)
Memory in use : 77 %
Uncached PFiles: 0x0
Use Inquiry : 1
Global Bus Type: default (0)
Check supported media : Disabled (0)

2.11.2007
NeroAPI
9:19:47 AM #1 Phase 112 File APIProgress.cpp, Line 276
DVD-Video files reallocation started

9:19:47 AM #2 Phase 114 File APIProgress.cpp, Line 276
DVD-Video files reallocation completed (no file modified)

9:19:47 AM #3 Phase 111 File APIProgress.cpp, Line 276
DVD-Video files sorted

9:19:48 AM #4 Text 0 File Reader.cpp, Line 127
Reader running

9:19:48 AM #5 Text 0 File Writer.cpp, Line 122
Writer MAD DOG MD-16XDVD9A4 running

9:19:48 AM #6 Text 0 File AudioCompilationImpl.cpp, Line 842
DRM: StartDrmRecording(RealRec:1, ImageRec:0, Copies:1)
DRM: Beginning burn process.

9:19:48 AM #7 ISO9660GEN -11 File geniso.cpp, Line 3293
First writeable address = 0 (0x00000000)

9:19:48 AM #8 ISO9660GEN -11 File geniso.cpp, Line 3293
First writeable address = 0 (0x00000000)

9:19:48 AM #9 Text 0 File Burncd.cpp, Line 3153
Turn on Disc-At-Once, using DVD media

9:23:12 AM #10 Text 0 File DlgWaitCD.cpp, Line 260
Last possible write address on media: 2295103 (510:01.28, 4482MB)
Last address to be written: 2286127 (508:01.52, 4465MB)

9:23:12 AM #11 Text 0 File DlgWaitCD.cpp, Line 272
Write in overburning mode: NO

9:23:12 AM #12 Text 0 File DlgWaitCD.cpp, Line 2339
Recorder: MAD DOG MD-16XDVD9A4, Media type: DVD+R

9:23:12 AM #13 Text 0 File DlgWaitCD.cpp, Line 438
>>> Protocol of DlgWaitCD activities: <<<
=========================================
Insert empty disc to write to.
(Medium in drive: unknown. Medium required by compilation: DVD+R/RW, DVD-R/RW, DVD-R DL, DVD+R DL.)

9:23:12 AM #14 Text 0 File ThreadedTransferInterface.cpp, Line 830
Setup items (after recorder preparation)
0: TRM_DATA_MODE1 ()
2 indices, index0 (150) not provided
original disc pos #0 + 2286128 (2286128) = #2286128/508:1.53
relocatable, disc pos for caching/writing not required/ required, no patch infos
-> TRM_DATA_MODE1, 2048, config 0, wanted index0 0 blocks, length 2286128 blocks [MAD DOG MD-16XDVD9A4]
--------------------------------------------------------------

9:23:12 AM #15 Text 0 File ThreadedTransferInterface.cpp, Line 1043
Prepare recorder [MAD DOG MD-16XDVD9A4] for write in CUE-sheet-DAO
DAO infos:
==========
MCN: “”
TOCType: 0x00; Session Closed, disc fixated
Tracks 1 to 1:
1: TRM_DATA_MODE1, 2048/0x00, FilePos 0 0 4681990144, ISRC “”
DAO layout:
===========
Start|Track|Idx|CtrlAdr|RecDep_____
0 | lead-in | 0 | 0x41 | 0x00
0 | 1 | 0 | 0x41 | 0x00
0 | 1 | 1 | 0x41 | 0x00
2286128 | lead-out | 1 | 0x41 | 0x00

9:23:12 AM #16 Phase 24 File APIProgress.cpp, Line 276
Caching of files started

9:23:12 AM #17 Text 0 File Burncd.cpp, Line 4037
Cache writing successful.

9:23:12 AM #18 Phase 25 File APIProgress.cpp, Line 276
Caching of files completed

9:23:12 AM #19 Phase 36 File APIProgress.cpp, Line 276
Burn process started at 8x (11,080 KB/s)

9:23:13 AM #20 Text 0 File ThreadedTransferInterface.cpp, Line 2609
Verifying disc position of item 0 (relocatable, disc pos, no patch infos, orig at #0): write at #0

9:23:13 AM #21 SCSI -1066 File Cdrdrv.cpp, Line 1182
SCSI Exec, HA 1, TA 0, LUN 0, buffer 0x12795400
Status: 0x04 (0x01, SCSI_ERR)
HA-Status 0x00 (0x00, OK)
TA-Status 0x02 (0x01, SCSI_TASTATUS_CHKCOND)
Sense Key: 0x05 (KEY_ILLEGAL_REQUEST)
Sense Code: 0x24
Sense Qual: 0x00
CDB Data: 0xAD 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x08 0x04 0x00 0x00
Sense Data: 0x70 0x00 0x05 0x00 0x00 0x00 0x00 0x0A
0x00 0x00 0x00 0x00 0x24 0x00

9:23:13 AM #22 Text 0 File DVDPlusRW.cpp, Line 648
Start write address at LBA 0
DVD high compatibility mode: Yes

9:24:15 AM #23 SCSI -1093 File Cdrdrv.cpp, Line 1436
SCSI Exec, HA 1, TA 0, LUN 0, buffer 0x00BA0000
Status: 0x04 (0x01, SCSI_ERR)
HA-Status 0x00 (0x00, OK)
TA-Status 0x02 (0x01, SCSI_TASTATUS_CHKCOND)
Sense Key: 0x03 (KEY_MEDIUM_ERROR)
Sense Code: 0x02
Sense Qual: 0x00
CDB Data: 0x2A 0x00 0x00 0x00 0x03 0x40 0x00 0x00 0x20 0x00 0x00 0x00
Sense Data: 0x70 0x00 0x03 0x00 0x00 0x00 0x00 0x0A
0x00 0x00 0x00 0x00 0x02 0x00

9:24:15 AM #24 CDR -1093 File Writer.cpp, Line 311
No seek complete

9:24:15 AM #25 Text 0 File ThreadedTransfer.cpp, Line 228
all writers idle, stopping conversion

9:24:15 AM #26 Text 0 File ThreadedTransfer.cpp, Line 222
conversion idle, stopping reader

9:24:16 AM #27 SCSI -1135 File Cdrdrv.cpp, Line 1182
SCSI Exec, HA 1, TA 0, LUN 0
Status: 0x04 (0x01, SCSI_ERR)
HA-Status 0x00 (0x00, OK)
TA-Status 0x02 (0x01, SCSI_TASTATUS_CHKCOND)
Sense Key: 0x03 (KEY_MEDIUM_ERROR)
Sense Code: 0x0C
Sense Qual: 0x00
CDB Data: 0x5B 0x01 0x01 0x00 0x00 0x01 0x00 0x00 0x00 0x00 0x00 0x00
Sense Data: 0x70 0x00 0x03 0x00 0x00 0x00 0x00 0x0A
0x00 0x00 0x00 0x00 0x0C 0x00

9:24:16 AM #28 Phase 127 File APIProgress.cpp, Line 276
Generating DVD high compatibility borders

9:24:16 AM #29 Phase 129 File APIProgress.cpp, Line 276
Generating DVD borders completed successfully

9:24:16 AM #30 Phase 38 File APIProgress.cpp, Line 276
Burn process failed at 8x (11,080 KB/s)

9:24:16 AM #31 Text 0 File AudioCompilationImpl.cpp, Line 867
DRM: DRM burn session terminated.

9:24:16 AM #32 Text 0 File AudioCompilationImpl.cpp, Line 896
DRM: Closing entire DRM handling. Bye.

Existing drivers:

Registry Keys:
HKLM\Software\Microsoft\Windows NT\CurrentVersion\WinLogon\AllocateCDROMs : 0 (Security Option)