The requirements for batch certificate are stated in the document of European Medicines Agency (EMA) EMA/INS/MRA/387218/2011 Rev 5, entered into force 1 June 2011. The obligations for EU countries follow from Directive 2001/83/EC Art. 51.2, Chapter 6.17 document EudraLex – The Rules Governing Medicinal Products in the European Union Volume 4 and EU Guidelines to Good Manufacturing Practice.
Source: http://ec.europa.eu/health/files/eudralex/vol-4/mra_batch-certificate_05-2011.pdf