The maximum tolerable period of disruption (MTPD) is the point in time after which the interruption of a business process causes unacceptable or existentially threatening consequences for the organization.
The MTPD (sometimes called MAO for Maximum Acceptable Outage) answers the hardest question in business continuity management: at what point does an outage stop being survivable?
Unlike the RTO, the MTPD is not a recovery target but an absolute pain threshold. It is derived from the business impact analysis (BIA): there you rate, per dimension such as financial damage, legal consequences or reputational harm, how strongly an outage hurts over time. The moment the damage crosses a defined intolerance threshold marks the MTPD.
This leads to the central rule of continuity planning: the RTO must always be shorter than the MTPD. The process has to be running again before the damage becomes unacceptable. Standards like ISO 22301 assume exactly this derivation, and regulations like DORA and NIS2 require critical functions to define such time objectives in a verifiable way.
In Kopexa you do not derive the MTPD by gut feeling but directly from the damage matrix of the BIA. You rate the impact per time window, Kopexa determines the MTPD from it and shows you in the impact curve whether your recovery times hold up against it.