Message type: E = Error
Message class:  USMD5_SSW - Single Step Workflow Message 
Message number: 013
Message text: Error in getting proper agent group; no agent group found
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 USMD5_SSW013 indicates that there is an issue with the system not being able to find a proper agent group. This error typically occurs in the context of SAP Master Data Governance (MDG) when the system is trying to determine the appropriate agent group for a specific process or task. Causes: Missing Configuration: The agent group may not be configured correctly in the system. This could be due to missing entries in the relevant customizing settings. Authorization Issues: The user may not have the necessary authorizations to access the agent group. Data Inconsistencies: There may be inconsistencies or missing data in the underlying tables that define agent groups. Incorrect Process Configuration: The process or workflow that is being executed may not be correctly set up to reference the appropriate agent group. Solutions: Check Configuration: Navigate to the relevant customizing settings in SAP (usually found under SPRO) and verify that the agent groups are correctly defined. Ensure
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
USMD5_SSW012 Trigger of sub-workflow failed
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
USMD5_SSW011 Cannot write link of CR type &1 to BRF+ Appl. ID into transport request
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
USMD5_SSW014 Error in getting proper agent group; user/non-user mixed group found
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
USMD5_SSW015 Error in getting proper agent group; multi non-user mixed group found
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.