> ## Documentation Index > Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt > Use this file to discover all available pages before exploring further. # FMA: XR-064 Joinable Game Sessions and Online Play > FMA scenario severities for XR-064 Joinable Game Sessions and Online Play — MPSD sessions, invites, party join, and multiplayer presence handling. # XR-064: Joinable Game Sessions and Online Play ## FMA scenario severities See the [XR-064 reference](/publishing/certification/xr/xr-064) for the underlying certification requirement. ### 064-01 Joining a Game Session from Outside the Game | Scenario | Severity | Platform | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------- | ------------------------------ | | The user is flagged as "Joinable" within the Friends list for a short duration, such as during matchmaking (likely due to 2014 Multiplayer APIs and isn't considered an issue). | Not Relevant (-4) | XBOX One, XBOX Series, Windows | | A private session can be joined by a user's friends (for example, without requiring an invite), likely as this is intended to mean 'Friends only'. | Not Relevant (-4) | XBOX One, XBOX Series, Windows | | The title doesn't remove an XBOX profile from the game party when exiting the lobby/game session. | Not Relevant (-4) | XBOX One, XBOX Series, Windows | | The title supports the ability to send a game invitation via the guide to a session that's full that can't be joined via in-title functionality. | Not Relevant (-4) | XBOX One, XBOX Series, Windows | | No current scenario. | Very Minor (1) | | | No current scenario. | Minor (2) | | | The title doesn't transition into an online session when joining/accepting a game invitation while the title is terminated, but transitions when launching the title without the need to join again or receive a second game invitation. | Moderate (6) | XBOX One, XBOX Series, Windows | | The title doesn't inform the user that they must return to the main menu/a previous menu in order to enter the multiplayer session. | Moderate (6) | XBOX One, XBOX Series, Windows | | The title doesn't place a user into a joinable game session when joining through the guide and no clear error messaging is displayed. | Critical (12) | XBOX One, XBOX Series, Windows | | Where an in-game joinable session exists, a user can't join that same session via the guide. | Critical (12) | XBOX One, XBOX Series, Windows | | The title doesn't allow a user to join an open multiplayer session after accepting a game invitation sent via the guide and no clear error messaging is displayed. | Critical (12) | XBOX One, XBOX Series, Windows | | No current scenario. | Catastrophic (22) | | **Notes** * Suggested probability of 4. Increase or decrease this value where you feel it's appropriate (for example, depending on game area or mode). * A session is considered "Joinable" if it's listed as joinable in the Friends list, or if it can be joined within the title via a title feature. Examples of a "Joinable" session include direct user-to-user parties, password protected experiences, and private lobbies. Being able to invite a user doesn't necessarily mean a session is joinable. Matchmaking sessions aren't necessarily joinable either. * The title can optionally support cross-platform PC↔XBOX sessions. * Titles aren't required to have users appear as joinable through the guide when in a defined private session (for example, a session that can only be joined by another user via game invitation). However, the title must allow users to send and receive a game invitation to a private session via the guide in all scenarios. * \[Windows] As of May 2020, this test case is only applicable when a title supports cross play and shares a titleID with an XBOX variant. ### 064-02 Joining a Game Session from the Same Game | Scenario | Severity | Platform | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------- | ------------------------------ | | The user is flagged as "Joinable" within the Friends list for a short duration, such as during matchmaking (likely due to 2014 Multiplayer APIs and isn't considered an issue). | Not Relevant (-4) | XBOX One, XBOX Series, Windows | | A private session can be joined by a user's friends (for example, without requiring an invite), likely as this is intended to mean 'Friends only'. | Not Relevant (-4) | XBOX One, XBOX Series, Windows | | The title supports the ability to send a game invitation via the guide to a session that's full that can't be joined via in-title functionality. | Not Relevant (-4) | XBOX One, XBOX Series, Windows | | No current scenario. | Very Minor (1) | | | The title prevents the user from rejoining a user's game session after leaving the session. | Minor (2) | XBOX One, XBOX Series, Windows | | The title doesn't inform the user that they must return to the main menu/a previous menu in order to enter the multiplayer session. | Moderate (6) | XBOX One, XBOX Series, Windows | | The title doesn't place a user into a joinable game session when joining through the guide and no clear error messaging is displayed. | Critical (12) | XBOX One, XBOX Series, Windows | | Where an in-game joinable session exists, a user can't join that same session via the guide. | Critical (12) | XBOX One, XBOX Series, Windows | | The title doesn't allow the user to send a game invitation through the guide wherever an in-title game invitation can be sent. | Critical (12) | XBOX One, XBOX Series, Windows | | The title doesn't allow the user to join an open multiplayer session after accepting a game invitation sent through the guide and no clear error messaging is displayed. | Critical (12) | XBOX One, XBOX Series, Windows | | No current scenario. | Catastrophic (22) | | **Notes** * Suggested probability of 4. Increase or decrease this value where you feel it's appropriate (for example, depending on game area or mode). * A session is considered "Joinable" if it's listed as joinable in the Friends list, or if it can be joined within the title via a title feature. Examples of a "Joinable" session include direct user-to-user parties, password protected experiences, and private lobbies. Being able to invite a user doesn't necessarily mean a session is joinable. Matchmaking sessions aren't necessarily joinable either. * The title can optionally support cross-platform PC↔XBOX sessions. * Titles aren't required to have users appear as joinable through the guide when in a defined private session (for example, a session that can only be joined by another user with a game invitation). However, the title must allow users to send and receive a game invitation to a private session via the guide in all scenarios. * \[Windows] As of May 2020, this test case is only applicable when a title supports cross play and shares a titleID with an XBOX variant. ### 064-05 Non-Joinable Game | Scenario | Severity | Platform | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------- | ------------------------------ | | No current scenario. | Not Relevant (-4) | XBOX One, XBOX Series, Windows | | No current scenario. | Very Minor (1) | | | The title displays an appropriate message informing the user the game can't be joined but the message is displayed too briefly (for example, one second or less on screen). | Minor (2) | XBOX One, XBOX Series, Windows | | When a user attempts to join a multiplayer session that's full, a message is displayed informing the user that the session can't be joined but no reason is given. | Moderate (6) | XBOX One, XBOX Series, Windows | | When a user attempts to join a multiplayer session that's full, a message isn't displayed or an incorrect/misleading message or reason is displayed. | Critical (12) | XBOX One, XBOX Series, Windows | | No current scenario. | Catastrophic (22) | | **Notes** * Suggested probability of 4. Increase or decrease this value where you feel it's appropriate (for example, depending on game area or mode). * The title can optionally support cross-platform PC↔XBOX sessions. * \[Windows] As of May 2020, this test case is only applicable when a title supports cross play and shares a titleID with an XBOX variant. ## Related topics - [XR-064 Joinable Game Sessions and Online Play](/publishing/certification/xr/xr-064.md) - [XBOX Requirement test cases for PC and mobile games](/publishing/certification/pc-policy-tests.md) - [PC and mobile certification requirements and top failures](/publishing/certification/pc-certification.md) - [XBOX Certification overview](/publishing/certification/overview.md) - [XR-124 Game Invitations](/publishing/certification/xr/xr-124.md)