How To Fix SALV_X_API154 - Unmarshalling of data failed: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: SALV_X_API - Messages for ALV API exceptions

• Message number: 154

• Message text: Unmarshalling of data failed: &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SALV_X_API154 - Unmarshalling of data failed: &1 ?

  The SAP error message SALV_X_API154 indicates that there was a failure in the unmarshalling of data, which typically occurs when there is an issue with the data format or structure being processed by the SAP ALV (ABAP List Viewer) framework. This error can arise in various scenarios, such as when trying to display data in an ALV grid or when handling data in a specific format that does not match the expected structure.
  Causes:
  
  Data Structure Mismatch: The data being passed to the ALV does not match the expected structure. This could be due to missing fields, incorrect data types, or unexpected null values.
  Serialization Issues: If the data was serialized (converted to a format for storage or transmission) and then deserialized (converted back to its original format), any discrepancies in the serialization process can lead to unmarshalling errors.
  Incorrect Field Mapping: If the field names or types in the data do not align with what the ALV expects, it can cause this error.
  Data Type Issues: Using incompatible data types (e.g., trying to pass a string where a numeric value is expected) can lead to unmarshalling failures.
  
  Solutions:
  
  Check Data Structure: Ensure that the data structure being passed to the ALV matches the expected structure. Verify that all required fields are present and that their data types are correct.
  Debugging: Use debugging tools to trace the data being passed to the ALV. Check for any discrepancies in the data format or structure.
  Field Mapping: Review the field mapping in your code to ensure that all fields are correctly defined and that there are no typos or mismatches.
  Data Validation: Implement data validation checks before passing data to the ALV to ensure that it meets the expected criteria.
  Review Serialization Logic: If you are using serialization, review the logic to ensure that data is being serialized and deserialized correctly.
  
  Related Information:
  
  ALV Documentation: Refer to the SAP documentation on ALV for guidelines on data structures and expected formats.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with detailed information about the error context and the data being processed.