How To Fix SALV_X_API021 - Contract violation in method call

SAP Error Message - Details

• Message type: E = Error

• Message class: SALV_X_API - Messages for ALV API exceptions

• Message number: 021

• Message text: Contract violation in method call

Self-Explanatory Message

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message 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:
  
  SALV Classes: Familiarize yourself with the various SALV classes and their methods. The main classes include CL_SALV_TABLE, CL_SALV_LIST, and CL_SALV_HIERSEQ_TABLE.
  SAP Notes: Check SAP Notes for any known issues or patches related to the SALV framework that might address this error.
  Community Forums: Engage with SAP community forums or platforms like SAP Community, Stack Overflow, or other ABAP developer forums for insights from other developers who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the SALV_X_API021 error in your SAP environment.