These guidelines are developed to assist the participating Member States in the reporting of the KPI-data. The connection of the KPIs and the related available data can be done via the use of the aggregated and semi-aggregated datafiles. The Baseline Coordination Team developed a guiding document that contains the basic guidelines for filling in these datafiles. The document on Data Quality Control describes the criteria and process that is advised to use for checking the data quality of the KPI-data. The guideline on data weighting supports Member States who require assistance for calculating sampling weights.