What does the error "RMS:MtoM Exceeds Required:100000 Available:90000 for entity account-ID across exchange across segment across product for rule Consider Unrealized Loss only for CASH and FO based on LTP" mean?

RMS:MtoM Exceeds Required:x Available:y for entity account-ID across exchange across segment across product for rule Consider Unrealized Loss only for CASH and FO based on LTP

This error occurs when an order is placed without sufficient funds in the trading account. This can be resolved by adding the additional funds required in order to take the position.