ansible pipelining config for aix

hello,all

when i set pipelining = True in ansible.cfg,

when i execute task for aix,
adhoc returns MODULE FAILURE,

playbook returns “module_stderr”: “3004-501 Cannot su to "root" : Authentication is denied.\n”

is there a way to solve this?

The pipelining feature does not work with su. This is because su NEEDS a tty and pipelining avoids opening one.