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Message type: E = Error
Message class: SALV_X_API - Messages for ALV API exceptions
Message number: 021
Message text: Contract violation in method call
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
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SALV_X_API021
- Contract violation in method call ?The SAP error message SALV_X_API021 indicates a "Contract violation in method call" when working with the SAP ALV (ABAP List Viewer) framework, specifically when using the SALV (Simple ALV) classes. This error typically arises when there is a mismatch between the expected parameters or the state of the object when a method is called.
Causes:
- Incorrect Method Usage: The method being called may not be appropriate for the current state of the object or may require parameters that are not being provided correctly.
- Object Lifecycle Issues: The object may not be properly initialized or may have been modified in a way that violates the expected contract of the method.
- Incompatible Data Types: The data types of the parameters passed to the method may not match the expected types.
- Missing Required Configuration: Certain configurations or settings may be required before calling the method, and if they are not set, it can lead to this error.
Solutions:
- Check Method Documentation: Review the documentation for the specific SALV method you are using to ensure that you are passing the correct parameters and that the object is in the expected state.
- Initialization: Ensure that the SALV object is properly initialized before calling the method. This includes creating the object and setting any required properties.
- Parameter Validation: Validate the parameters being passed to the method to ensure they match the expected types and values.
- Debugging: Use the ABAP debugger to step through the code and identify where the contract violation occurs. This can help pinpoint the exact method call and the state of the object at that time.
- Review Object State: Check the state of the SALV object before the method call to ensure it is in a valid state for the operation you are trying to perform.
Related Information:
CL_SALV_TABLE
, CL_SALV_LIST
, and CL_SALV_HIERSEQ_TABLE
.By following these steps, you should be able to diagnose and resolve the SALV_X_API021 error in your SAP environment.
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