Allowed Remap Count Item Changes details the changes that can be made to the remap count items during an update, reorganization, or modeling process. An asterisk (*) refers to the explanatory note following the table.
Explanatory Note
When the item is deleted from the remap, it can be converted to a virtual item. The virtual item fills the space formerly occupied by the item, prevents the remap record format from changing, and eliminates the need to recompile programs which invoke the remap. Remap items can only be converted to virtual items when the actual item is deleted from the data set or from global data.
The two reasons for deleting an item from a data set and converting it to a virtual item are as follows:
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When an item is no longer needed, it can be eliminated from the data set and converted to a virtual item. This saves space on disk.
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When an item value can be computed based upon the value of other items in the record, it can be transformed to a virtual item. This saves space on disk and eliminates duplication of the computation in every program needing the value.
