CMCMCW(Material cost transaction worker) is not calling CSTPSCHK.STD_COST_DIST_HOOK in R12 (12.1.3)

Hi,

In 11i my client has used the 'cstpschk.std_cost_dist_hook' to hit a particular account for 'Intercompany RMA sales order'.

Now they are going to upgrade from 11i to  R12 (12.1.3), but here CMCMCW is not at all calling the CSTPSCHK.STD_COST_DIST_HOOK function in order to hit the account.

Do i need to do extra setups for this costing hook package in order to get called by CMCMCW(Material cost transaction worker).

As per my knowledge the costing hook will get called automatically.

Please help to resolve this issue. It's quite urgent.

Thanks in advance,