When a non-mandatory resource goes Failed offline within nested Resource Groups, the Operations Console shows a misleading warning within the "Resource Group Status" section :
"Warning: The resource cannot be started because of unfulfilled dependencies".
The warning should be :
"One or more group members have a problem"
This is a problem with the mapping of problem states within TSAMP to states within TSAAM/OC related to the handling of non-mandatory resources. APAR IV19477 was opened to address this problem.
This APAR is addressed within TSAMP v18.104.22.168 and above. Therefore the resolution is to upgrade the TSAMP environment, not the TSAAM/OC environment.