clearcase ucm - change the mastership of my stream to be able to deliver to parent stream -

i have following error when try deliver stream b parent stream a:

cleartool: warning: trigger "dlvr_start_precondition" has refused let deliver_start proceed. cleartool: error: deliver_start preop trigger not allow operation. cleartool: error: unable integration. cleartool: error: unable deliver stream "a" 

was indicated change mastership of stream temporary able deliver parent stream. stream on different server parent stream.

i see can done with:

multitool chmaster –stream [ –ove·rride ] master-replica-selector stream-selector 

in case should following command?

multitool chmaster –stream b 

the multitool chmaster man page mention:

-str/eam [ -ove/rride ] master-replica-selector stream-selector ... 

transfers mastership of specified streams , associated objects replica specified master-replica-selector.
specify stream-selector in following form:

stream-selector     [stream:]stream-name[@vob-selector] 

use -override option if chmaster–stream command fails.
-override, chmaster attempts transfer mastership of objects mastership not transferred during original invocation of command.

in case:

multitool chmaster –stream stream:a@\apvob      siteb multitool chmaster –stream stream:a@/vobs/apvob siteb 

with siteb being site masters stream b.