1. A method of facilitating input/output processing of a processing environment, said method comprising: obtaining by an input/output communications adapter of the processing environment a transport control word, said transport control word specifying a location in memory of the processing environment that includes a plurality of input/output commands to be executed and a location in memory for status information relating to execution of the plurality of input/output commands; forwarding from the input/output communications adapter to a control unit of the processing environment the plurality of input/output commands as one entity; and executing by the control unit the plurality of input/output commands to perform one or more input/output operations, wherein the executing is performed absent a tracking by the input/output communications adapter of state relative to the individual input/output commands of the plurality of input/output commands being executed by the control unit.