The objective of D2.1 is to report on the T2.1 activities on the TLO/MLO multidisciplinary workshop, spanning from the philosophical community to formal TLO/MLO developers and users, to present OntoCommons project, gather existing experience and agreement on OCES methodology and TLOs choice. The details of the workshop organization and attendance, the results of the questionnaire and the final survey document are presented and commented.