Sounds like the message is complaining about a zone with a duplicate member in it. You may want to open a command line session to each of the MDS and see if you can locate and delete any duplicate zone members. You should check all the MDS switches in the VSAN, because the duplicate member could be in any one of them.
This document will provide screenshots to outline the steps to setup
TACACS+ configuration to ACI and also the configuration required on
Cisco ACS server. Please find the official Cisco guide for configuring
TACACS+ Authentication to ACI:
Is it supported or NOT supported? It's a frequently asked question.
Before APIC, release 2.3(1f), transit routing was not supported within a
single L3Out profile. In APIC, release 2.3(1f) and later, you can
configure transit routing with a single L3Out pr...
Cisco Documents are usually accurate, but when it came to the document
on Cisco APIC Signature-Based Transactions it was slightly off the mark.
This document is for those novices to API like me who cant seem to
figure out how to go about performing signat...