When you issue a REQUEST=PROCESS_REFLIST request, you must identify the buffer that contains the list of data item names. You can use a single buffer (the BUFFER keyword) or multiple buffers (the BUFLIST keyword). Either method enables you to build a list that contains a maximum of 4096 names.

For information about whether to use a single buffer or multiple buffers and for information on selecting buffer attributes, see Design Considerations for Choosing the Buffer Format.