You can define vital record specifications so that DFSMSrmm retains the data set or volume by combining the retention information from two vital record specifications. DFSMSrmm processes both primary and secondary vital record specifications to retain a data set. DFSMSrmm can combine retention information from the two vital record specifications and apply the combined retention to a data set. Use the UNTILEXPIRED retention type in the primary vital record specifications to combine its retention with the retention in the secondary vital record specification. When UNTILEXPIRED is specified in a primary vital record specification, DFSMSrmm looks at the secondary vital record specification to determine if UNTILEXPIRED is true or not. If DFSMSrmm finds no secondary vital record specification that matches a data set or if UNTILEXPIRED is specified in the secondary vital record specification, then DFSMSrmm uses the volume expiration date to determine if UNTILEXPIRED is true or not.