Corrective actions are managed to closure when the project’s performance or results deviate significantly from the plan.
When the acquirer determines (e.g., through its monitoring of measurement data) that supplier progress does not appear to be sufficient to meet a service level defined in the supplier
agreement, then the acquirer initiates and manages corrective action with the supplier.
If the supplier does not comply appropriately with the acquirer’s initiation of corrective action, the acquirer escalates and resolves this issue as a supplier agreement
issue.
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CMMI-ACQ 1.2
4. 
SG 2 Manage Corrective Action to Closure