How To Fix RSTRAN558 - Rule &1, target field &2 has conversion exit 'SNUMC'. Use HANA runtime.

SAP Error Message - Details

• Message type: E = Error

• Message class: RSTRAN - Messages for Transformation

• Message number: 558

• Message text: Rule &1, target field &2 has conversion exit 'SNUMC'. Use HANA runtime.

What causes this issue?

Rule &V1& with target field &V2& has conversion exit 'SNUMC'. Please use
HANA runtime.

System Response

Please ensure the intermediate results have the correct format if you
intend to use ABAP runtime. Otherwise please use HANA runtime.

How to fix this error?

It is recommended that you use HANA runtime because ABAP runtime does
not guarantee the correct format for intermediate results. In ABAP
runtime, the correct format is only available only after the conversion
exit has been executed on the target field. With HANA runtime, the
correct format is guaranteed for intermediate results.

Procedure for System Administrators

Internal rule ID &V1&

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSTRAN558 - Rule &1, target field &2 has conversion exit 'SNUMC'. Use HANA runtime. ?

  The SAP error message RSTRAN558 indicates that there is an issue with a conversion exit being used in a transformation rule. Specifically, the message states that the target field is using the conversion exit 'SNUMC', which is typically used for numeric fields that require special formatting or conversion.
  Cause:
  
  Conversion Exit Issue: The error arises because the transformation is trying to apply a conversion exit that is not compatible with the HANA runtime. The conversion exit 'SNUMC' is often used in traditional ABAP environments but may not be supported or may behave differently in HANA.
  Data Type Mismatch: The target field may have a data type that does not align with the source field, leading to conversion issues.
  Transformation Logic: The transformation logic may not be correctly defined, leading to the application of an inappropriate conversion exit.
  
  Solution:
  
  
  Remove or Replace the Conversion Exit: 
  
  If the conversion exit is not necessary, you can remove it from the transformation rule.
  If you need to maintain the formatting, consider using a different method or function that is compatible with HANA.
  
  
  
  Check Data Types: 
  
  Ensure that the data types of the source and target fields are compatible. If they are not, you may need to adjust the transformation logic or the data types in the data model.
  
  
  
  Update Transformation Logic: 
  
  Review the transformation rules and logic to ensure they are appropriate for the HANA environment. You may need to rewrite parts of the transformation to avoid using unsupported features.
  
  
  
  Use HANA-Compatible Functions: 
  
  Instead of using conversion exits, consider using HANA-compatible SQL functions or expressions that achieve the same result without relying on ABAP-specific features.
  
  
  
  Related Information:
  
  SAP HANA: HANA is an in-memory database that requires different handling of data types and transformations compared to traditional SAP systems. It is important to ensure that any transformations are optimized for HANA.
  SAP Notes and Documentation: Check SAP Notes for any specific guidance or updates related to the RSTRAN558 error. SAP documentation may also provide insights into best practices for transformations in HANA.
  Testing: After making changes, thoroughly test the transformation to ensure that it behaves as expected and that data integrity is maintained.
  
  By addressing the conversion exit issue and ensuring compatibility with HANA, you should be able to resolve the RSTRAN558 error.