question

No, we don’t support to use the Display Name to define the current player who is adding the friend. In the API request body of Add Friend, it’s only allowed to use the filed – PlayFabId to represent the player who is adding the friend. As you used in the third statement, you can use the predefined variable currentPlayerId to obtain the requester’s PlayFabId. You can also use the currentPlayerId in the other statements, so requesters don’t need to provide their own PlayFabIDs manually. Besides, the request body of the Add Friend only contains the field -- FriendTitleDisplayName, there is no field -- FriendDisplayName.And in the request body of SetFriendTags, there is also no field – FriendDisplayName. You can only use the FriendPlayFabId in the API SetFriendTags. Please check the documentation Add Friend, Set Friend Tags for more information.

According to your description, you also would like to let the friend add the caller as a friend, is it right? If so, you have to provide the friend player Id to the CloudScript function to call the API Add Friend. If the caller only knows the friend’s title display name, you can call the Client API GetAccountInfo to retrieve the specific PlayFabId through the TitleDisplayName, then pass the friend player Id as the argument to CloudScript. If so, the CloudScript function could be something like this.

handlers.SendFriendRequest = function(args, context){ 
    var result = server.AddFriend({
    PlayFabId: currentPlayerId,
    FriendPlayFabId: args.friendPlayerId});

    var result = server.SetFriendTags({ 
    FriendPlayFabId: args.friendPlayerId,   
    Tags: ["requestee"]});
    
    var result = server.AddFriend({
    PlayFabId: args.friendPlayerId,
    FriendPlayFabId: currentPlayerId});

    var result = server.SetFriendTags({
    FriendPlayFabId: currentPlayerId, 
    Tags: ["requester"]});
} 

In addition, could you please clarify that why you only want to use the display name to do all thing about friend adding? And how do you get the friend’s display name? In general, if you can get the DisplayName, you can also obtain the PlayFabId. The PlayFabId is designed as the unique identifier for the player, our APIs always use it to identify a player.