In this document the Metadata Adaptation tool presented at the Pattaya meeting has been validated, with a slightly adjusted syntax and semantics. An alternative syntax has also been proposed so as to be combined with the adaptation hint DS. This tool supports adaptation operations such as metadata integration. The presented scheme includes two descriptors, named AverageValue and InvariantProperties, that can be efficiently used by an integration engine in order to improve the quality of the integrated final description and to speed up the whole integration process. Examples and experiment results are given to support the validation of the proposed tool
