The accuracy of a model refers to the correctness of the way it represents the semantics of the domain in the focus. 

Accuracy of a Validated Conceptual Model

The completeness of a model means it contains all the parts needed to be whole. Parts of a conceptual model refer to the semantics apartof the domain in focus.

Completeness of a Validated Conceptual Model

The Conflict-Freeness of a model means that no part of it conflicts with another part. This means that none of the semantics that makes up the domain in focus should contradict one another. 

Conflict-Freeness of a Validated Conceptual Model

the redundancy-freeness of a model means that no part of it is unnecessary. This means that none of the semantics that makes up the domain in focus should be unique and essential.

Redundancy-Freeness of a Validated Conceptual Model

Each of these attributes are determined by the primary stakeholders of the domain of focus:
- accurate
- complete
- conflict-free
- no redundancy

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Conceptual models need to be evaluated by focal stakeholders to confirm that it accurately represents the domain that is being conceptualized.

Validating a Conceptual Model

Shanks, G., Tansley, E., & Weber, R. (2003). Using ontology to validate conceptual models. Communications of the ACM, 46(10), 85-89.

Using ontology to validate conceptual models

The following theories/models are used to validate conceptual models:
- Ontological model

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