How To Fix CNV_20700044 - Old material number to be saved in field MARA-BISMT

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20700 - Material number conversion

• Message number: 044

• Message text: Old material number to be saved in field MARA-BISMT

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.

You decided to save the old field contents for material numbers (that
is, the status before the conversion) in field MARA-BISMT.
Note that the existing data in field MARA-BISMT( coming for example from
data transfer into R/3 ) will be overwritten. Additionally the old
material numbers which are converted because of automatic renaming will
also be saved in MARA-BISMT.

System Response

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20700044 - Old material number to be saved in field MARA-BISMT ?

  The SAP error message CNV_20700044, which states "Old material number to be saved in field MARA-BISMT," typically occurs during data migration or conversion processes, particularly when using SAP's Migration Cockpit or similar tools. This error indicates that the system is expecting an old material number to be stored in the MARA table's BISMT field, but it is either missing or incorrectly formatted.
  Cause:
  
  Missing Data: The old material number (BISMT) is not provided in the data being uploaded or migrated.
  Incorrect Format: The old material number may not conform to the expected format or length defined in the system.
  Data Mapping Issues: There may be a misconfiguration in the mapping of fields during the migration process.
  Data Integrity Issues: The data source may have inconsistencies or errors that prevent the old material number from being correctly identified.
  
  Solution:
  
  Check Data Source: Ensure that the source data contains the old material numbers and that they are correctly formatted.
  Data Mapping: Review the mapping configuration in the migration tool to ensure that the old material number is correctly mapped to the MARA-BISMT field.
  Data Validation: Validate the data before migration to ensure that all required fields, including the old material number, are populated and correctly formatted.
  Adjust Migration Settings: If applicable, adjust the settings in the migration tool to ensure that it correctly handles the old material numbers.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration process you are using for any additional requirements or troubleshooting steps.
  
  Related Information:
  
  MARA Table: The MARA table in SAP contains general material data. The BISMT field is used to store the old material number for reference.
  Migration Cockpit: If you are using the SAP S/4HANA Migration Cockpit, ensure that you are following the guidelines for data preparation and mapping.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context on handling old material numbers during migration.
  
  If the issue persists after following these steps, it may be beneficial to engage with SAP support or consult with a technical expert familiar with data migration processes in SAP.