There is not any standard system.
Players normally reaches request several, in addition to most situations the obtain their choice in the event no-one in addition wants that, but in the final it's determined by the panel and administration. Players can select virtually any amount that they desire, provided that no person else in the group has used it initially. For example , Rohit Sharma needed the quantity twelve jersey, but he couldn't possess it, as a mature player ( Figure whom? It's Sachin Tendulkar) currently provides it.
Additionally it is not mandatory for each participant to have a hat number, by way of example Virender Sehwag.