Message type: E = Error
Message class:  LSO_COLLABORATION - Integration SAP Learning Solution => Collaboration Room 
Message number: 308
Message text: No categories maintained
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_COLLABORATION308: No categories maintained typically occurs in the context of SAP Learning Solution (LSO) when a user attempts to access or utilize a feature that requires specific categories to be defined, but none have been set up in the system.
Cause: The error is caused by the absence of defined categories in the system for the specific functionality you are trying to access. Categories are often used to classify and organize learning content, collaboration activities, or other related items within the SAP Learning Solution.
Solution: To resolve this error, you need to maintain the necessary categories in the SAP system. Here are the steps to do this: Access the Customizing Transaction: Go to the SAP Easy Access screen. Enter the transaction code SPRO to access the SAP Reference IMG (Implementation Guide). Navigate to the Learning Solution Settings: Follow the path: SAP Customizing Implementation Guide -> SAP Learning Solution -> Basic Settings -> Define Categories. Define Categories: In
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
LSO_COLLABORATION307 Room profile &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
LSO_COLLABORATION306 Role profile check
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
LSO_COLLABORATION309 Check for &1 is not yet implemented
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
LSO_COLLABORATION310 Role Profile &1
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.