As part of the Online Registration changes for season 19/20 all players require the same role and registration type as the competition they are playing in.
This means that any Junior Player participating in a Junior Competition will need to be registered online and assigned a Junior role (done automatically once registered online)
If you have a Junior Player participating in a Senior Competition the club can manually register and assign them a Senior role, please see our support article on registering Senior players here
Juniors already Playing in a Senior Comp
If clubs have recently registered a Junior Player to a Senior Competition, by assigning them a Senior Role and Manually registering them they may not appear in a Junior Comp. This will be a result of them not being registered as Junior Player to that Association and having the required Junior role type.
Clubs will need to encourage the Junior Player to register online to the Junior product which will have them appear correctly and be available for selection in a Junior Comp.