8860ch04.fm Draft Document for Review September 23, 2019 12:13 am 4. Select one or more empty check boxes in the I/O Config pane to assign the CHPID. In the  Hardware pane, the  CHPID number  is inserted in the CHPID column. Iin the Assigned By  column, the value of  Manual  is inserted. 5. If you select more than one CHPID for an ICS SR adapter type, you see the  Multiple --> value (Figure 4-30) inserted in the CHPID and Assigned By columns.  The  Automatic Mapping  button becomes available after you assign all the CHPIDs of IOCP  type CIB or CS5. If you are importing an IOCP statements file from a 2964 that had CU Priority values defined,  review the CU Priority values first. The CHPID Mapping Tool can then perform the availability  functions appropriately for a 3906.  You must assign priorities if you want to make some control units more important (in the CMT  processing order) than others, or have two (or more) control units that you want the CMT to  process at the same time. Chapter 4. Preparing IOCP for using the CMT  75 4.9 Processing Automatic Mapping then CU Priority Figure 4-29 Adapter Type of HCA3 and associated CHPID assigned Figure 4-30 Adapter Type of HCA3 and associated multiple CHPID assigned