Message type: E = Error
Message class:  CNV_OR_PE_GEN - Messages for generation functions 
Message number: 011
Message text: Function group &1 does not exist
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_OR_PE_GEN011 indicates that a specific function group (denoted as &1 in the error message) does not exist in the SAP system. This error typically arises during data migration or conversion processes, particularly when using SAP's tools for data migration, such as the SAP S/4HANA Migration Cockpit or other conversion tools.
Cause: Missing Function Group: The function group that the system is trying to access is not present in the SAP system. This could be due to an incomplete installation, missing components, or a failed upgrade. Incorrect Configuration: The system might be misconfigured, pointing to a function group that is not relevant or has been removed. Transport Issues: If the function group was supposed to be transported from another system (like a development or quality assurance system) and the transport did not occur successfully, this error can arise.
Solution: Check Function Group Existence: Use transaction code SE80 (Object Navigator) or SE37 (Function Builder) to
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_OR_PE_GEN010 Function group &1 does not exist; function module cannot be created
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_OR_PE_GEN009 Namespace check of object &1 failed
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_OR_PE_GEN012 Table &1 does not exist
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_OR_PE_GEN013 At least one field of index &1 does not exist in table &2
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.