There is a “cash and cash equivalent” category, isn’t that meant to meet these redemption requests?
I think Net Receivable (NR) represents bad debt that AMC hasn’t yet marked down to zero or side pocketed yet. e.g. take a look at below scheme, here NR is staggering 46% and if you look below this matches closely (though not exactly, so there is something more to it) DHFL default amount.
I would say ask AMC for breakdown, may be there is flexibility what to put into NR.