Please provide the compatible UIM agent for the AIX 7.2 version.
Use the latest version of nimldr to install the AIX robot.
https://support.nimsoft.com/download.aspx?ReleaseId=5326&state=GA
The AIX installer 'package' can be downloaded from /uimhome on your Primary hub, e.g., http://<primary_hub_hostname>/uimhome/installers.jsp
install_AIX_6_64 is the latest one available. "Installation archive for 64bit AIX 6.1"
It includes support for AIX 7.x which includes minor versions. AIX 64-bit OS ONLY.