You have a license server with a Maya and an Entertainment Creation Suite license and you will notice that the Entertainment Creation Suite licenses for mental ray batch [MMR1] will overide the mental ray batch count even though they are issued on the same date.
In this instance, if you have the following:
1 x Entertainment Creation Suite
5 x Maya
For each Maya license you have, you should have 5 mental ray batch licenses, therefore you should have 30 x mental ray batch [MMR1] licenses.
Using the License Parser, you will see the behaviour of the licenses and the problem will only happen if the licenses are combined.
Maya 2013 license
Entertainment Creation Suite 2013
Maya 2013 and Entertainment Creation Suite 2013 combined into 1 license file
The reason for this problem is that the Maya 2013 license with has an all inclusive mental ray batch license [MMR1,MMR2, MMR3, MMR4, MMR6 & 2013-2010].
PACKAGE 85537MAYAMMR1_F adskflex 1.000 \
COMPONENTS="85857MAYAMMR1_2013_0F 85694MAYAMMR1_2012_0F \
85537MAYAMMR1_2011_0F 85537MAYAMMR3_2011_0F \
85537MAYAMMR4_2011_0F 85537MAYAMMR5_2011_0F \
85537MAYAMMR2_2011_0F 85400MAYAMMR1_2010_0F \
85400MAYAMMR3_2010_0F 85400MAYAMMR4_2010_0F \
85400MAYAMMR5_2010_0F 85400MAYAMMR2_2010_0F" OPTIONS=SUITE \
SUPERSEDE ISSUED=23-Nov-2012 SIGN="0EE7 2D5B 3C26 12B1 3244 \
2A3E F352 1017 6D52 D3EE 2368 0344 D031 B84E EDC8 0224 743C \
3068 39A8 0FF6 4E17 325D 3EA4 6B07 F459 83AD 9797 4B19 7488 \
FC26" SIGN2="1A9E 4021 21E8 1D97 81BA 896C 8DC2 FEF9 5835 937E \
0EEA 3E9D 3627 C26D 91F9 0AC3 E78C 273A 395D D0CE 37A7 36B3 \
F4F7 DDA8 EF65 491E 6584 EB57 2920 FBC4"
INCREMENT 85537MAYAMMR1_F adskflex 1.000 23-nov-2013 30 \
VENDOR_STRING=nfr:extendable SUPERSEDE DUP_GROUP=UH \
SUITE_DUP_GROUP=UHV ISSUED=23-Nov-2012 BORROW=4320 \
SN=XXX-XXXXXXXX SIGN="0444 8708 9189 4F44 5C2B 4414 6955 0F45 \
D228 097B 02ED 54B7 72CF AA5D 0914 155B 6B8C 8CAB 4B76 3923 \
43B9 A204 AE1E 7EDA 31AE 2772 06E7 E56E BF10 A630" SIGN2="0355 \
BD86 57C3 0DDC 843B D0A9 505B 9E18 D39A 15F4 8D63 96C6 6BA6 \
2B14 2A62 0583 3D1A 680F 6838 0A8A 8F20 827D 617F A07E AF89 \
0D25 C18B C9E8 A2F0 11CF"
As a temporary workaround, please comment out all the MMR1 licenses with the exception of this Maya MMR1 license (see above example).
Thanks to Matti Ööpik for alerting us of the issue and we have also informed the Maya Development Team of this problem.
Reference:
http://upandready.typepad.com/up_and_ready/2011/10/general-licensing-the-importance-of-the-issue-date.html
http://upandready.typepad.com/up_and_ready/2011/08/batch-render-licenses-when-you-have-both-normal-maya-and-maya-suite-licenses.html