This issue was reported in Bugzilla tool by Dominique SIDOU in 12/08/2022, as follows: Bugzilla [Bug 270] - SOL005_def.yaml DateTime missing type: string SOL005/definitions/SOL005_def.yaml definitions: DateTime: description: > Date-time stamp. Representation: String formatted according toas defined by the date-time production in IETF RFC 3339. + type: string format: date-time The issue was reported for v3.3.1 but it shall be fixed in all subsequent versions.