N4 logs any errors that occur in the ufvValidateMarryErrors field when marrying or validating the marriage of a container and chassis per a request from XPS. XPS sends requests to N4 to marry containers when a mount operation is performed, such as when a CHE sets a container on a chassis. The purpose of the ufvValidateMarryErrors field is to allow you to see error messages that occurred when N4 failed to marry a container and chassis or when validations to marry a container and chassis failed. If you use this field, you can add it to a filter in the Units view.