along the lines of what done already for WMA.
References:
dmwm/WMCore#12437
which is about "number, not strings" as a correction on
dmwm/WMCore#11942 (comment)
see also
https://mattermost.web.cern.ch/cms-o-and-c/pl/9donquy4pi8s3yoz8oufse6bco
and replies to it
Check with SI for more details.
This is likely also a proper time to document the task['tm_user_config']['acceleratorparams']
i.e. Site.acceleratorparams in crabConfig.py