How To Fix CNV_MBT_46043 - Adding column limit exceeded

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT_46 - PCL message class

• Message number: 043

• Message text: Adding column limit exceeded

Self-Explanatory Message

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.

What else can you do?

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT_46043 - Adding column limit exceeded ?

  The SAP error message CNV_MBT_46043 with the description "Adding column limit exceeded" typically occurs during data migration or transformation processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the number of columns being added to a table exceeds the allowed limit.
  Cause:
  
  Column Limit Exceeded: Each database table has a maximum number of columns it can contain. In SAP HANA, this limit is generally 1,024 columns per table. If your migration or transformation process attempts to add more columns than this limit, you will encounter this error.
  Data Model Design: The data model being used may not be optimized, leading to an excessive number of columns in a single table.
  Incorrect Mapping: During the data migration process, the mapping of source fields to target fields may have been incorrectly configured, resulting in an attempt to add too many columns.
  
  Solution:
  
  Review Data Model: Analyze the data model to ensure it is optimized. Consider normalizing the data to reduce the number of columns in a single table. This may involve splitting the data into multiple related tables.
  Check Mapping Configuration: Review the mapping configuration in the migration tool to ensure that it is correct and does not attempt to add unnecessary columns.
  Limit Column Additions: If possible, limit the number of columns being added in a single migration step. You may need to break down the migration into smaller batches or stages.
  Use Views: If certain columns are not needed for immediate processing, consider using database views instead of adding all columns directly to the table.
  Consult Documentation: Refer to SAP documentation for specific guidelines on data migration and limitations regarding table structures.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or updates regarding this error.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may provide best practices and guidelines for data migration.
  Performance Considerations: Keep in mind that having too many columns can also impact performance. It is generally a good practice to keep tables as lean as possible.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with detailed information about the migration process and the specific circumstances under which the error occurs.