How To Fix CNV_20700056 - Material number "space" exists in material master

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20700 - Material number conversion

• Message number: 056

• Message text: Material number "space" exists in material master

What causes this issue?

Field MATNR contain space in Material master table MARA and MARA is
master table for Material number.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20700056 - Material number "space" exists in material master ?

  The SAP error message CNV_20700056 indicates that there is an issue with a material number that consists solely of a space in the material master. This typically occurs during data migration or conversion processes, where the system encounters a material number that is not valid or is improperly formatted.
  Cause:
  
  Invalid Material Number: The material number is expected to be a valid alphanumeric string, but in this case, it is just a space.
  Data Migration Issues: During data migration, if the source data contains empty or improperly formatted material numbers, it can lead to this error.
  Data Entry Errors: Manual data entry errors may also result in the creation of material numbers that are just spaces.
  
  Solution:
  
  Identify the Source: Determine where the invalid material number is coming from. This could be from a legacy system or a data file being imported.
  Correct the Data: 
  
  If you have access to the source data, correct the material number to ensure it is a valid alphanumeric string.
  If the material number is not needed, consider removing the entry altogether.
  
  
  Data Validation: Implement data validation checks in your data migration process to catch such errors before they cause issues in SAP.
  Use SAP Tools: If you are using SAP's data migration tools (like LSMW or SAP S/4HANA Migration Cockpit), ensure that the mapping and transformation rules are correctly set up to handle material numbers.
  Testing: After making corrections, re-run the migration or data import process to ensure that the error does not occur again.
  
  Related Information:
  
  Material Master Data: The material master is a central repository of information related to materials in SAP. Each material is identified by a unique material number.
  Data Migration Best Practices: When migrating data to SAP, it is essential to clean and validate the data beforehand to avoid issues like this.
  SAP Notes and Documentation: Check SAP Notes for any specific guidance or patches related to this error message. SAP's support portal may have additional resources or updates that can help.
  
  By addressing the root cause of the error and ensuring that the data is properly formatted, you can resolve the CNV_20700056 error and prevent it from occurring in the future.