As you proceed in the SMS implementation, data subtypes are gradually moved to SMS management. Often, the only difference between adding one data subtype and the next is adding data to a filter list (FILTLIST) or creating a new FILTLIST. In addition, FILTLISTs must often be added or updated in multiple routines. The COPYFILT facility simplifies this process. COPYFILT is a COPYLIB facility for filter lists contained in ACS routines.