1. Before taking a decision on new or substantially modified binding requirements, a Union entity or a public sector body shall carry out an interoperability assessment.
Where, in relation to binding requirements, an interoperability assessment has already been carried out or where binding requirements are implemented by solutions provided by Union entities, the public sector body concerned shall not be required to carry out a further interoperability assessment in relation to those requirements. A single interoperability assessment may be carried out to address a set of binding requirements.
The Union entity or public sector body concerned may also carry out the interoperability assessment in other cases.