This might help:
(Source: https://www.ccilindia.com/Membership/ByLawsDocs/CCIL%20Rules-%20270715.pdf)
So, looks like there could be some kind of regulatory or technical difficulty in transferring the shares to Pabrai Funds. We have no way of knowing the truth unless Pabrai himself answers this or someone from CCIL officially confirms what is happening here.