Message type: E = Error
Message class:  CNV_PE - General messages for posting engine 
Message number: 512
Message text: T093 Customizing already loaded by previous transfer method
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_PE512 T093 Customizing already loaded by previous transfer method typically occurs during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or other data transfer tools. This error indicates that the customizing settings for the specified table (in this case, T093) have already been loaded into the system using a different transfer method, and therefore, the system is preventing a duplicate load.
Cause: Duplicate Data Load: The customizing data for table T093 has already been imported into the system using a different method or transfer process. Incorrect Sequence of Data Loads: The data migration process may not have been followed in the correct sequence, leading to attempts to load the same customizing data multiple times.
Configuration Issues: There may be issues with the configuration of the migration cockpit or the data transfer method being used.
Solution: Check Existing Data: Verify if the customizing data for T093 is already present
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_PE511 Undo transfer method &1 is not assigned to a post transfer method
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_PE510 Transformation rule with ID &1 could not be loaded
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_PE513 T093 information already present for area &1 and target &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_PE514 T093 Customizing successfully read for system &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.