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

CNV_20700044 - Overview

• 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.

CNV_20700044 - Details

• 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