What is ALB + AHV = Negative in BOD ?

What is ALB + AHV = Negative in BOD ?

Exchange may increase margin on portfolio level on next day BOD file which need to get clear before 10.00 A.M (Before 1st Snapshot) incase of client does not have sufficient margin to mitigate the exchange margin requirement. Failing to mitigate exchange margin requirement would be short fall case and penalty will be levied by the exchange. To check the contract wise margin, please use the SPAN calculator in TT.