How To Fix RSO_RES_ADSO268 - Field &1: Changing data type to or from NUMC is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: RSO_RES_ADSO - Datastore Object

• Message number: 268

• Message text: Field &1: Changing data type to or from NUMC is not allowed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSO_RES_ADSO268 - Field &1: Changing data type to or from NUMC is not allowed ?

  The SAP error message RSO_RES_ADSO268 indicates that there is an issue with the data type of a field in an Advanced DataStore Object (ADSO) when trying to change it to or from a NUMC (numeric character) type. This error typically arises during the modeling or data loading processes in SAP BW/4HANA or SAP BW on HANA environments.
  Cause:
  The error occurs due to the following reasons:
  
  Data Type Incompatibility: The field in question is being modified in a way that is not allowed by SAP. Specifically, changing a field's data type to or from NUMC is restricted because it can lead to data integrity issues.
  Existing Data: If there is already data in the ADSO that does not conform to the new data type, the system will prevent the change to avoid data loss or corruption.
  Modeling Restrictions: SAP has certain restrictions on how data types can be modified in the context of data modeling to ensure consistency and reliability.
  
  Solution:
  To resolve the RSO_RES_ADSO268 error, consider the following steps:
  
  
  Check Field Definitions: Review the field definitions in the ADSO. Ensure that you are not trying to change a field's data type to or from NUMC. If necessary, create a new field with the desired data type instead of modifying an existing one.
  
  
  Data Migration: If you need to change the data type, you may need to:
  
  Create a new field with the desired data type.
  Migrate the data from the old field to the new field using a transformation or data flow.
  Once the data is migrated, you can drop the old field if it is no longer needed.
  
  
  
  Modeling Best Practices: Follow best practices for data modeling in SAP BW/4HANA. Avoid changing data types of existing fields unless absolutely necessary, and always ensure that the data type aligns with the expected data format.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to ADSO and data types for any specific guidelines or restrictions that may apply to your version of SAP BW.
  
  
  Testing: After making changes, thoroughly test the data model to ensure that it behaves as expected and that there are no further issues with data loading or reporting.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or updates regarding this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have implemented.
  Data Modeling Guidelines: Familiarize yourself with SAP's data modeling guidelines to avoid similar issues in the future.
  
  By following these steps, you should be able to resolve the RSO_RES_ADSO268 error and ensure that your data model functions correctly.