All institutions submitting data to the Oesterreichische Nationalbank must report master data, which enable the OeNB to cross-link data with the corresponding business units and assign OeNB ID numbers to individual institutions. This ID must be used to tag all data sent to the OeNB. For all identified units, we moreover collect classification data, ownership data, data on groups of connected clients, payments information (master data for credit institutions, creditor ID) and – for securities other than ISIN-identified assets – internal securities identification numbers. Additionally the Report “Standardisierte Stammdaten” (SSD) facilitates regular cross-checks, thus helping increase data quality, and the extraction of classification data. Finally, this section, offers guidance on restructuring of banks or routing data following bank mergers (see the German-language “Leitfaden für Banken-Fusionen”).