Shadowtron

I am trying to add an original form Magearna to my violet save file so I viewed the one in the PKHex database. When I try to validate it I recieve the following alerts: 1)Unable to match to a mystery gift in the database. 2)Encryption Constant matches PID. 3)Fateful encounter should not be checked. How do i make it legal? I did not face these issues when attempting to add a normal magearna.