Metadata should include information on the degree of conformity with the implementing rules, specifications and other legal acts. ISO 19115 provides a mechanism for reporting about the evaluation of the conformity of the resource against a given specification. 

This metadata element is used to indicate the level of conformity with implementation regulations. Conformity is defined by stating the document, the specification and the level of conformity with it. Conformity of a spatial data resource is expressed using the following elements:

Conformity: specification
Conformity: explanation
Conformity: degree.