The Register of Legal Entities is the register of the judicial district in which you are registered as a legal entity. A company must always indicate their RLE number on an invoice so that, in the event of a dispute, the counterparty knows which legal district to contact. For Belgium, the possible Registers of Legal Entities are: Ghent, Antwerp, Leuven, Nivelles, Brussels (Dutch-speaking), Brussels (French-speaking), Liège, Mons-Charleroi and Eupen.