According to Warren, communities engage in various functions except for:

The choice indicating that communities engage in establishing boundaries with external entities is not recognized as a core function performed by communities according to Warren. In the context of community functions, socializing members into the culture, regulating goods and services, and providing mutual aid and support are all essential activities that help shape, sustain, and support the community.

Socializing members into the community's culture fosters a sense of belonging and shared values, which is fundamental for community cohesion. Regulating goods and services ensures that community needs are met, making sure that resources are distributed effectively for the benefit of all members. Providing mutual aid and support addresses the local needs and reinforces social ties within the community, creating networks of care and assistance among individuals.

Establishing boundaries with external entities, while potentially relevant in certain sociological or political contexts, is not typically categorized as a primary function of communities in this framework. Communities are more focused on internal dynamics and the relationships among members than on delineating external boundaries.