(36)For institutions which have limited derivative exposures and which currently use the MtMM or the OEM, both the SA-CCR and the simplified SA-CCR could be too complex to implement. The OEM should therefore be reserved as an alternative approach for those institutions that meet predefined eligibility criteria, and for institutions that are part of a group which meets those criteria on a consolidated basis, but should be revised in order to address its major shortcomings.