How To Fix RSDS190 - &1: No conversion performed from external format

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDS - New DataSource

• Message number: 190

• Message text: &1: No conversion performed from external format

What causes this issue?

The currently selected adapter &V2& for the current DataSource returns
data fully typed in the internal format. For this reason, classifying
the format for &V1& as <LS>external</> is not useful. The format will
not be converted to the internal format.
This may even result in a loss of data if the data in the source is
available in an external format which is not compatible with the
internal format in terms of type or length since the adapter expects to
receive the internal format from the source.
Exceptions:
The data type is CURR
The data type is CHAR, CUKY or UNIT and
an ALPHA conversion exit is specified
the length is the same as the external (output) length and
- a conversion exit is specified
- you want to perform a conversion to uppercase letters

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?

Choose a different adapter or change the format specified for &V1& to
<LS>internal</> and make sure that the data is available in the internal
format in the source.

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 RSDS190 - &1: No conversion performed from external format ?

  The SAP error message RSDS190 typically indicates that there is an issue with the conversion of data from an external format to an internal format within the SAP system. This error often arises in the context of data extraction or data loading processes, particularly when dealing with data sources like DataSources, InfoProviders, or during the execution of queries.
  Cause:
  The error message "No conversion performed from external format" can be caused by several factors, including:
  
  
  Data Type Mismatch: The data type of the source field does not match the expected data type in the target field. For example, if a numeric field is being treated as a string or vice versa.
  
  
  Invalid Data Format: The data being loaded or extracted may not conform to the expected format. For instance, date formats, currency formats, or other specific formats may not match.
  
  
  Missing or Incorrect Mapping: If there is a mapping issue between the source and target fields, the system may not know how to convert the data.
  
  
  Configuration Issues: There may be issues in the configuration of the DataSource or InfoProvider that prevent proper data conversion.
  
  
  Data Quality Issues: The source data may contain invalid or unexpected values that cannot be converted.
  
  
  Solution:
  To resolve the RSDS190 error, you can take the following steps:
  
  
  Check Data Types: Verify that the data types of the source and target fields match. Ensure that numeric fields are not being treated as strings and that date formats are consistent.
  
  
  Review Data Formats: Ensure that the data being loaded or extracted adheres to the expected formats. For example, check date formats (e.g., YYYY-MM-DD) and currency formats.
  
  
  Examine Mapping: Review the mapping configuration between the source and target fields. Ensure that all fields are correctly mapped and that there are no missing mappings.
  
  
  Data Quality Check: Inspect the source data for any invalid or unexpected values. Cleanse the data if necessary to ensure it meets the expected criteria.
  
  
  Debugging: If the issue persists, consider using debugging tools within SAP to trace the data flow and identify where the conversion is failing.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific DataSource or InfoProvider you are working with for any known issues or additional configuration steps.
  
  
  Seek Help from SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support for assistance, providing them with detailed information about the error and the context in which it occurs.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  DataSource Configuration: Review the configuration settings of the DataSource or InfoProvider in the SAP BW system.
  Data Extraction Process: Understand the data extraction process and any transformations that may be applied to the data during the load.
  
  By following these steps, you should be able to identify and resolve the cause of the RSDS190 error in your SAP environment.