After two Datacom instances with Mode = S were started in the sysplex, I tried to switch the shadow via Command.
But it results: DB00229E and both STCs have stopped.DB00229E - FATAL INTERNAL ERROR - JOB TERMINATED - XES-1BFC
Customer would like to use the MIGRATE_TO_SHADOW
Before getting DB00229E
error message the following can be seen:
CFNAME ALLOCATION STATUS/FAILURE REASON
ICF1W1S STRUCTURE ALLOCATED C4000800
ICF2W1S PREFERRED CF ALREADY SELECTED C4000800
PREFERRED CF HIGHER IN PREFLIST It sounds that you are picking up another CF different that the one you want.
IXL015I show CONNECTIVITY= DEFAULT
The connector specified CONNECTIVITY=DEFAULT or did not specify CONNECTIVITY. When the coupling facilities are being ordered for allocation, the eligibility queue is primarily sorted by attribute weight.
PREFERRED CF ALREADY SELECTED
The system did not select the coupling facility because a more preferable coupling facility was already selected.
When the coupling facility status is PREFERRED CF ALREADY SELECTED, the message displays one of the following lines that gives the primary reason why this coupling facility was placed lower than the previous one in the eligibility queue. Because of how different requirements are weighted, this information does not imply that all coupling facilities higher in the eligibility queue meet the requirement:
PREFERRED CF HIGHER IN PREFLIST
This coupling facility is lower in the PREFLIST than another coupling facility that is suitable for allocation.
Extracted from: https://www.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v2r1.ieama00/ixl015i.htm