Generally happens when performing Secondary functionality resulting in a push to Encompass (Accept Lock, Lock with Investor, Save to LOS, etc.)
There has been a virtual field added to their forms in Encompass.
Delete above and send to Customer:
This error is indicating there is an issue in Encompass. Please reach out to your Ellie Mae Representative as a virtual field has been added to your forms and is preventing the push from Optimal Blue to Encompass. This will need to be removed or modified in order to allow for further functionality to occur between Optimal Blue and Encompass.