RADAR supports a review process prior to data publication. For this purpose, a dataset can be moved from the status "Pending" to the status "In Review". In this status the dataset can not be changed. RADAR generates a unique link which the data provider can pass on to the reviewers. The reviewers can use this link to access unpublished datasets without prior authentication. Datasets with the status "In Review" are kept in the temporary storage. Once the peer review process has been completed, the data provider can either return the status of the dataset to "Pending" or publish the dataset. In both cases, the previously created unique link is rendered invalid. The status of a dataset can be set to "In Review" several times in succession.