Lost Employee's comments set into Performance Goals Documents

Summary

Lost Employee's comments set into Performance Goals Documents

Content

Hello,

An employee complete his self evaluation with all comments in our Performance Document sections (Goals, Skills and Overall Performance Rating).
His/Her manager almost finalized Manager evaluation step, when an error occured saying that the MeasurementName attribute into GoalMeasurementEO is mandatory/required" and the system didn't catch manager's comments.
is it possible to retrieve information and data before the incident?
Could we launch any report to retrieve Manager's comments of Performance Goals Document?

Thank you