Error in Standard Manager Logfiles:
Routine AFPESA cannot construct the name of an executable file for your concurrent request 23455110.
Check that the file name components are correct and valid on your system. Check that the environment for the person who started the concurrent manager.
Check your custom environment file in APPL_TOP (customPATCH_testapp.env). Custom product top directories should be exported in that file and check the custom env file name also. Try to echo those tops once you run the APPSPATCH_testapp.env.
If custom tops are not exported in that custom env, your Standard Manager will be down when Dev team submits a request, which is related to that custom top.