Which sharing capability is not available for the Customer Community License?

The sharing capability that is not available for the Customer Community License is Role Hierarchy. In the context of Salesforce's sharing model, Role Hierarchy is designed to allow users to gain access to records based on their position within an organization, where higher roles inherit access from lower roles in the hierarchy. However, the Customer Community License is primarily intended for external users, such as customers or partners, who typically do not operate within an organization's internal role structure.

On the other hand, Sharing Sets, Share Groups, and Account Management are all sharing capabilities that can be utilized by users with a Customer Community License. Sharing Sets allow for the sharing of records with users based on their specific attribute, such as their membership in a community, while Share Groups are useful for organizing users into groups for easier record sharing. Account Management also enables community users to access account-related information effectively.

The limitation in using Role Hierarchy for external users aligns with the overarching goal of providing a flexible yet secure sharing model in Salesforce while considering the unique needs of customer communities.