How To Fix CNV_MBT178 - Initial load of tables finished with errors

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 178

• Message text: Initial load of tables finished with errors

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_MBT178 - Initial load of tables finished with errors ?

  The SAP error message CNV_MBT178 indicates that the initial load of tables during a data migration or conversion process has finished with errors. This error is typically encountered in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data transfer processes.
  Causes:
  
  Data Quality Issues: The source data may contain inconsistencies, missing values, or invalid formats that prevent successful loading into the target tables.
  Mapping Errors: There may be issues with the mapping of fields between the source and target systems, leading to data that cannot be correctly interpreted.
  Configuration Issues: Incorrect configuration settings in the migration tool or the target system can lead to errors during the load process.
  Database Constraints: Constraints such as primary keys, foreign keys, or unique constraints in the target database may be violated by the incoming data.
  Technical Errors: There could be technical issues such as connectivity problems, timeouts, or resource limitations on the database server.
  
  Solutions:
  
  Check Error Logs: Review the detailed error logs generated during the migration process. These logs will provide specific information about which records failed and why.
  Data Cleansing: Cleanse the source data to resolve any inconsistencies or invalid entries. This may involve correcting formats, filling in missing values, or removing duplicates.
  Review Mapping: Ensure that the mapping of fields between the source and target systems is correct. Adjust the mapping if necessary to align with the target schema.
  Adjust Configuration: Verify the configuration settings of the migration tool and ensure they are set up correctly for the data being migrated.
  Check Constraints: Review the database constraints in the target system and ensure that the incoming data complies with these constraints. Adjust the data or constraints as needed.
  Retry the Load: After addressing the identified issues, retry the initial load process to see if the errors are resolved.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as LTMC (for Migration Cockpit) or LTMOM (for Migration Object Modeler) to manage and monitor the migration process.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance related to the CNV_MBT178 error.
  Documentation: Refer to the official SAP documentation for the specific migration tool you are using, as it may contain troubleshooting steps and best practices for data migration.
  
  By following these steps, you should be able to identify the root cause of the CNV_MBT178 error and implement the necessary solutions to successfully complete the initial load of tables.