There are numerous activities that are part of executing the sustainability plan.

Sustainability activities are designed toembed new behaviorsinto normal operations. If these are ineffective, employees oftenrevert to old ways of working. This backsliding undermines adoption, erodes benefits realization, and threatens the credibility of change management. While delays (B), customer behavior (C), and vision alignment (D) are concerns, the most direct risk of ineffective sustainability practices is aretreat to the prior current state.

(Reference: ACMP Standard, Process Group 4 – Sustainability Activities: Reinforce adoption, monitor usage, adjust systems, and prevent reversion.)