Replacing data elements

Note: For a list of data element types, refer to the "Data Element MCS" section in SMP/E for z/OS Reference.

The actual update to the library is done by either SMP/E or the copy utility.

SMP/E updates the library in these cases:
- The data element was packaged inline and has been transformed by GIMDTS. All control information is removed, the transformed data element is changed back to its original format, and the target library is updated with the element.
- The data element must be reformatted to be compatible with the target library. For more information on reformatting data elements, see Reformatting data elements.
- The target library is a sequential data set.
The copy utility updates the library in all other cases. A COPY control statement is passed to the copy utility.