The CANopen emergency protocol allows for optional reporting of emergency resolution, if one/some but not all emergencies are resolved. The current implementation does not support this feature.

One, but not all error reasons are gone. An emergency message containing error code 0000h
(Error reset) may be transmitted together with the remaining errors in the error register and in
the manufacturer-specific error field.

or more clearly worded:

One error has been reset, but not all. The EMCY telegram contains error code 0000h and the
error register indicates the remaining errors that are present.
The manufacture-specific area is set to zero. source