This activity ensures the resolution of known errors (that is, problems for which the root cause is fully understood). This includes the search for a solution, the implementation planning of resolution actions to eliminate known errors (e.g. by initiating a request for change (RFC) or by initiating a Project Proposal) and tracking the successful implementation of the change to the infrastructure. The submission of an RFC or Project Proposal is a result of this activity. The error resolution has to be documented in the problem and known error records.