Hi,
I am currently working on multiplayer game.if player1 and player2 creates separate SharedgropData with their Playfab Id's.
1) can player1 updateSharedGroupData of player2, even though player2 is not member of player1 SharedGroupData and wise versa.
Shared Group Data (https://api.playfab.com/docs/tutorials/landing-players/shared-groups) has no associated users by default. Any PlayFab IDs added to them (via AddSharedGroupMembers) will have full read/write authority over the data in them, so we tend to recommend not doing that (to prevent cheating). Instead, we recommend writing to it via Cloud Script, and using a well-defined schema for the Shared Group IDs, so that they can easily be looked up, or tracking those IDs in player data.
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