No conversion for data provider & ! See Customizing

What causes this issue?

The code conversion function is not active for the specified data
provider. Therefore, the market data is not converted.

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?

If you would like the market data to be converted, you must set the
'Convert keys' indicator in Customizing for the data provider.
<DS:SIMG.HERKUNFT_DEF_UMSCHL>Define origin of market data and code
conversion</>

Error message extract from SAP system. Copyright SAP SE.