The Retention Master File must contain one (and only one) record which indicates the type of retention to apply to all data sets for which specific retention criteria cannot be supplied.
To create this record, you must select one of the twelve retention types as the default retention type at the data center. This retention type will be applied to all data sets that are not assigned retention using specific retention statements (those that identify data sets by either a fully qualified or partially qualified data set name).
Choose the retention type that will be used most commonly at your site. It is recommended that you select type 2 date control. This means that all of your data sets will be retained according to the DEF system option or the EXPDT parameter in their JCL. (If a date is present in both places, the later date will be used.) You can then use additional retention statements to add specific entries to the RMF as you need them.
Example
ADDRTN DSN(DEFAULT) OWNER(TAPE LIBRARIAN) +
RTN(2DC)
This example illustrates the two statements used to define date control as the default retention type at the data center.
When types 2, 3, B, or C are used as the default retention, the count field cannot be coded.
Unlike other retention definitions statements the DEFAULT retention can not specify JOB or VER parameters.
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