However, tax administrations are likely to respond differently to the failure to comply with the terms and conditions of an existing APA, than to the failure to meet critical assumptions.55 This may reflect differences in the procedures prescribed by an APA agreement, domestic law or procedural provision. For example, it may be the case that where there is a breach in the critical assumption the terms of the APA prescribe that it should be cancelled unless otherwise agreed, whereas, the consequence of non- compliance may be that a tax administration can choose to cancel, revoke, revise or enforce an APA.
55 Section E.3 of Annex II to Chapter IV of the OECD TPG.