Message type: E = Error
Message class:  LSO_COLLABORATION - Integration SAP Learning Solution => Collaboration Room 
Message number: 216
Message text: Collaboration Room &1 is in use by &2 &3; no exclusive use
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.
Unfortunately, there isn't any extra information in this error notice.
First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).
Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.
You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.
The SAP error message LSO_COLLABORATION216 indicates that a collaboration room (a virtual space for collaboration in SAP Learning Solution) is currently in use by another user or process, and therefore, exclusive access cannot be granted to the user trying to access it. This can happen in scenarios where multiple users are trying to access or modify the same collaboration room simultaneously.
Cause: Concurrent Access: Another user is currently using the collaboration room, which prevents exclusive access. Session Lock: The collaboration room may be locked due to an ongoing session or activity by another user. System Configuration: The system may be configured to allow only one user at a time in certain collaboration rooms.
Solution: Wait and Retry: If another user is using the collaboration room, wait for them to finish and then try accessing it again. Check Active Sessions: If you have access to system administration tools, check for active sessions in the collaboration room and see
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
LSO_COLLABORATION215 Collaboration Room &1 is used exclusively by &2 &3
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
LSO_COLLABORATION214 Collaboration Room &1 is locked; no change possible
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
LSO_COLLABORATION300 ** MESSAGES IN CHECK REPORT **
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
LSO_COLLABORATION301 Collaboration Room &1&2 of &3-&4.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.