According to one embodiment, a method for queuing a transaction request. The method may include receiving, by a processor, at least one transaction request from a transaction processing system. The method may also include storing the at least one received transaction request in a queue within a 64-bit storage system. The method may further include monitoring a 31-bit storage system. The method may also include determining at least one control block within the monitored 31-bit storage system is available. The method may further include transmitting the at least one stored transaction request to the monitored 31-bit storage system.