3289341 - Managed object ID must be unique (<Interface channel name> already exists): change the channel name

In step 5.2 "Configuration" of ICMon configuration, you are going to create one interface channel.
When you click on Save button, you got one message similar to below even if this interface channel doesn't exist in any technical scenario.

Managed object ID must be unique (<Channel name>(IDOC):<SID>~ABAP-><SID>~ABAP already exists): change the channel name.

You want to create the interface channel without changing the channel name.

• SAP Solution Manager 7.20

KBA , SV-SMG-MON-IPO-IC , Interface Monitoring , Problem