Message type: E = Error
Message class:  CNV20200 - Messages for development class CNV_20200 
Message number: 276
Message text: CO object numbers are converted
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 CNV20200276, which states "CO object numbers are converted," typically arises during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is an issue with the conversion of Controlling (CO) object numbers, which are essential for financial and managerial accounting in SAP.
Cause: Data Migration Issues: The error often occurs when there are inconsistencies or issues in the data being migrated, particularly with CO object numbers (like cost centers, internal orders, etc.). Mapping Errors: If the mapping of CO objects from the legacy system to the new system is not correctly defined, it can lead to conversion errors. Missing Configuration: If the necessary configuration for CO objects is not set up in the target system, it can result in conversion failures. Duplicate Entries: If there are duplicate CO object numbers in the source data, it can cause conflicts during
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV20200275 AO object numbers have to be converted
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20200274 No relevant obj.number found: Dom. J_OBJNR could be excluded
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20200277 CO object numbers are excluded from the conversion
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20200278 CNVDOMS entry was deleted: &1, &2, &3, &4
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.