Template-Type: ReDIF-Paper 1.0 Author-Name: György Fabricius-Ferke Author-Workplace-Name: EDUTUS College Title: HOW TO IMPROVE YOUR ERP SYSTEM - A 3.M THEORY Abstract: The research problem is that every enterprise (regardless of whether it is industrial, agricultural, or is in services) has at least a few unique features in its own accounting information system, as well as in its management support system. On the other hand, general ERP systems are not designed to support these unique accounting features of firms. These features are mainly found in decision-support part of information system, and are reflected in data model of information system. Furthermore, managers continuously have to develop their decision-support information systems. Methods: AIT-1, -2 and -3: AIT-1: General IT solutions that are used in all companies; AIT-2: Tested solutions applied in various firms/economic entities; AIT-3: IT systems and solutions that are only needed at the given firm/economic entity, and are therefore unique and completely specific to that entity. Contribution to the literature: There are always three data-models present when designing application development schemes for accounting information systems: 1.M: The data model for a decision support information system defined by long-term strategic goals; 2.M: The data processing model used so far; 3.M: The data model of the bought or adopted information system. As such, one must be very careful when changing the decision-support information system of one's firm. These statements are supported by 28 years of research and experience at 24 different firms. support system. Creation-Date: 20151015 Publication-Status: Published in Challenges in economic and technological development - Conference Proceedings, 15-16 October 2015, ISBN 978-963-358-100-1, University of Miskolc File-URL: http://tmp.gtk.uni-miskolc.hu/pdf/mic/etpdsw/05.pdf File-Format: application/pdf Handle: RePEc:mic:etpdsw:6