How To Fix UCT8250 - Source selection is empty due to inverse mapping

SAP Error Message - Details

• Message type: E = Error

• Message class: UCT8 - Message class for UCT8(mapping)

• Message number: 250

• Message text: Source selection is empty due to inverse mapping

What causes this issue?

A mapping rule is defined in the method. Before reading the source data,
the system maps the data inversely to derive the source selection from
the target selection. However, the resulting source selection is empty.
This is often caused by the use of unsuitable mapping rules.

System Response

The system cannot read the source data.

How to fix this error?

Examine the mapping rules with regards to any complex logic contained in
condition, reassignment, or complex move operators. In particular, make
sure the inversion of each mapping rule does not produce conflicting
results.

Procedure for System Administrators

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 UCT8250 - Source selection is empty due to inverse mapping ?

  The SAP error message UCT8250, which states "Source selection is empty due to inverse mapping," typically occurs in the context of data transfer or mapping processes, particularly when working with SAP's data migration tools or during the configuration of data sources in SAP systems.
  Cause:
  The error is generally caused by an issue in the mapping configuration where the source selection criteria do not match any records in the source data. This can happen due to:
  
  Inverse Mapping Issues: The mapping defined for the source and target does not align correctly, leading to no valid source records being identified for the target.
  Data Inconsistencies: The data in the source system may not meet the criteria defined in the mapping, resulting in an empty selection.
  Configuration Errors: Incorrect settings in the mapping configuration or transformation rules can lead to this error.
  Missing Data: The expected data might be missing or not loaded into the source system.
  
  Solution:
  To resolve the UCT8250 error, you can take the following steps:
  
  
  Check Mapping Configuration:
  
  Review the mapping settings to ensure that the source and target fields are correctly defined.
  Ensure that the mapping logic is appropriate and that there are no inverse mapping issues.
  
  
  
  Validate Source Data:
  
  Check the source data to ensure that it contains the expected records that should be mapped.
  Use transaction codes like SE16 or SE11 to inspect the relevant tables and confirm that the data exists.
  
  
  
  Adjust Selection Criteria:
  
  Modify the selection criteria in the mapping configuration to ensure that it correctly identifies the source records.
  Ensure that any filters or conditions applied in the mapping are valid and reflect the actual data structure.
  
  
  
  Test with Sample Data:
  
  If possible, test the mapping with a smaller set of sample data to identify if the issue persists.
  This can help isolate whether the problem is with specific records or the overall mapping configuration.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources related to the specific data transfer or mapping tool you are using for additional guidance.
  
  
  
  Seek Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support or consulting with a technical expert who specializes in SAP data migration or configuration.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with transaction codes related to data mapping and migration, such as LSMW (Legacy System Migration Workbench) or others relevant to your specific scenario.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the UCT8250 error and implement a suitable solution.