I am getting the following error on creating a shared audience under Profiles & Targets -> Lists
Error while creating the mapping for the "3901849" segment
Not able to save the audience.
I am getting same type of error on selecting any of the audience segments available in the Marketing Cloud.
This was the access issue, you should have the "access permissions to Audience Library and CampaignV6 – accentureplc – admin " to create a shared audience.
The issue got resolved after getting access from the marketing cloud administrator.