Message type: E = Error
Message class:  CNV_DMC_SIN - Messages for s-innovations migration 
Message number: 335
Message text: Additional values in the general data will be ignored in class type &1.
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_DMC_SIN335 indicates that there are additional values in the general data that will be ignored for a specific class type during a data migration or conversion process. This error typically arises in the context of using the SAP Data Migration Cockpit (DMC) or during the execution of a migration project.
Cause: The error occurs when the data being migrated contains extra values or fields that are not recognized or supported for the specified class type. This can happen due to: Mismatch in Data Structure: The source data may have additional fields that do not exist in the target system's class type definition. Incorrect Mapping: The mapping configuration in the migration project may not align with the structure of the source data. Data Quality Issues: The source data may contain unexpected or erroneous values that do not conform to the expected format.
Solution: To resolve this error, you can take the following steps: Review the
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_DMC_SIN334 no payment card is flagged as standard payment card
What causes this issue?  The system issues an error message and will not allow you to continue with this transaction until the error is resolved. Syst...
CNV_DMC_SIN333 no address is flagged as standard address
What causes this issue?  The system issues an error message and will not allow you to continue with this transaction until the error is resolved. Syst...
CNV_DMC_SIN336 Changing of already existing values is not allowed
What causes this issue?  You transferred the value &V1& in one of the fields provided on sheet 'Basic Data' which has already an exi...
CNV_DMC_SIN337 Please provide only key fields for the existing plant &1
What causes this issue?  If you want to create a dependent org unit (e.g. new storage location) to an already existing plant please provide only the k...
Click on this link to search all SAP messages.