ICP244I CUADD ALREADY USED FOR LINK ADDRESS xxxx ON SWITCH yy BY CONTROL UNIT zzzz
Explanation
Two ESCON or FICON® control units have the same
path (switch.link) through an ESCON or FICON Director
(SWITCH keyword) and the same logical address (CUADD keyword). You
cannot attach two ESCON or FICON control units to the same
port on an ESCON or FICON Director and specify the
same logical address for each control unit unless the channel paths
are all the same type (TYPE keyword) or a mix of CNC and FCV channel
paths and you are trying to define one of the following:
- ESCON CTC communications
- FICON CTC communications
- A single physical control unit as multiple control units for use by different logical partitions (LPs).
Note: Two control units can never have the same path (css.chpid.link.cuadd)
for a given channel path.
System action
IOCP continues to validate and check the syntax of the remaining statements. However, it does not generate an IOCDS and it does not produce configuration reports.
Programmer response
Do one of the following:
- If you are defining two physical control units, correct the switch number or link address for one of the control units so that the control units attach to different ESCON or FICON Directors or different link addresses on the same director.
- If you are defining ESCON CTC or FICON CTC communications, ensure that both control units are defined as ESCON CTC or FICON CTC control units (see IOCP definitions) and that the channel paths are all the same type or a mix of CNC and FCV channel paths.
- If you are defining a single physical control unit as multiple control units for use by different LPs, ensure that the control units have the same unit address ranges, the channel paths in each control unit are all the same type or all CNC and FCV, and none of the paths attaching to the different control units belong to the same LP. The logical partition intersection test is based on the initial access lists of the channel paths attaching to the control units.
- If you are defining a control unit that supports logical addressing, change the CUADD keyword values to the unique logical addresses that your control unit supports. Ensure that the channel paths in each control unit are the same type or a mix of CNC and FCV channel paths.
Note: Not all ESCON and FICON control units support logical
addressing.