This document describes the initial Data Management Plan of the PSS-Pass project and the initial data sets that have been identified to support the three pilot evaluations for industrial validation of the project technologies. The data sets are described in accordance with the European Commission guidelines for Research Data Management and include the key attributes of data type, format, metadata, use of standards and sharing modalities. Further data sets associated with benchmarks and other facilities to support the development of the PSS-Pass components may be utilised, and any additional data sets will be described in future Data Management Plan updates, as the technology development tasks progress and relevant data sets are developed or adopted.