The following are known Action Replay Codes for Pokemon Conquest on Nintendo DS (NDS).

Game ID: VPYT-D50A86CD

Master Code – Must Be On
00000000 00000000
00000000 00000001
00000000 00000000
00000000 00000000
00000000 00000000
00000000 023ff090
00000000 023ff190
00000000 02100000

Fix Code – Must Be On
5380e000 00000000
d3000000 02100000
f380e000 00001000
d2000000 00000000
6380e000 00000000
023ff1d8 0380e000
d2000000 00000000

IN BATTLE CODES:

Infinite Turns Left
5204a8ac e5841000
0204a8ac e5941000
d2000000 00000000
5204aaa8 15850000
0204aaa8 15950000
d2000000 00000000

Large Link Boost After Battle
e2000200 00000010
e3570006 20800001
30800401 ea01bc83
5206f418 e59fc008
0206f41c eafe4377
d2000000 00000000

99x All Items
e2000100 00000010
e3a01063 e5c01018
95d00018 ea010fc6
52044024 90800002
02044028 eafef034
d2000000 00000000