Message type: E = Error
Message class:  CNV_MBT_46 - PCL message class 
Message number: 162
Message text: Reference maintainence at this level not possible
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 CNV_MBT_46162 typically occurs during the execution of a migration or conversion process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that reference maintenance at the specified level is not possible, which usually means that the system is unable to maintain or update certain reference data due to constraints or configuration issues. Causes: Incorrect Configuration: The reference data or configuration settings may not be set up correctly, leading to the inability to maintain references. Data Integrity Issues: There may be inconsistencies or integrity issues in the data that prevent the system from processing it correctly. Authorization Issues: The user executing the migration may not have the necessary authorizations to perform the required actions. Technical Limitations: The specific level of reference maintenance may not be supported by the current version of the software or the migration tool being used. Solutions: Check Configuration: Review the configuration settings related to the
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_MBT_46161 Enter a migration object
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_MBT_46160 Enter a valid migration object
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_MBT_46163 Select a group to maintain its documentation
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_MBT_46164 No references found for the selection group &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.