Message type: E = Error
Message class:  CNV_PE_BOD - Messages in context of OBT/ES interaction 
Message number: 020
Message text: Adjust ES data models
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_PE_BOD020, which pertains to the adjustment of ES (Enterprise Services) data models, typically arises during the data migration process in SAP systems, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is an issue with the data models that need to be adjusted to align with the new system requirements or configurations.
Cause: Data Model Incompatibility: The error often occurs when the data models in the source system do not match the expected structure in the target system. This can happen due to differences in data types, missing fields, or changes in the data model between versions.
Configuration Issues: If the configuration settings for the data migration are not correctly set up, it can lead to discrepancies that trigger this error. Custom Developments: Custom fields or modifications in the source system that are not recognized in the target system can also lead to
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_PE_BOD018 ES data model exists already
What causes this issue?  In embedded specification (ES), the data model is identified by the root template ID of the posting engine table parameter. T...
CNV_PE_BOD016 Sender RFC destination not available in ES
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_PE_BOD021 ES data models have been successfully adjusted
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_PE_BOD025 Preselection Task of WSPOS &1 is still running
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.