How To Fix ECN803 - Internal error: unexpected case for call of parameter &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ECN - Message class for IS-U navigator customizing

• Message number: 803

• Message text: Internal error: unexpected case for call of parameter &1

What causes this issue?

Internal programming error:
An error has occurred for an internal variable.

System Response

The system had to terminate processing.

How to fix this error?

Note the following:
The name of the function module
The transaction
The entries that led to this error
Send a problem message containing these specifications to SAP.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ECN803 - Internal error: unexpected case for call of parameter &1 ?

  The SAP error message ECN803, which states "Internal error: unexpected case for call of parameter &1," typically indicates that there is an unexpected situation or condition encountered in the system when processing a specific parameter. This error is often related to internal logic or data inconsistencies within the SAP system.
  Possible Causes:
  
  Data Inconsistency: There may be inconsistencies in the data being processed, such as missing or incorrect entries in the database.
  Custom Code: If there are custom enhancements or modifications in the system, they might not be handling certain cases correctly, leading to this error.
  Configuration Issues: Incorrect configuration settings in the relevant modules could lead to unexpected behavior.
  System Bugs: There may be bugs in the SAP software version you are using that trigger this error under specific conditions.
  
  Solutions:
  
  Check Data Integrity: Review the data being processed when the error occurs. Ensure that all required fields are populated correctly and that there are no inconsistencies.
  Review Custom Code: If there are any custom developments or enhancements, review the code to ensure it handles all expected cases properly. Debugging the code may help identify the root cause.
  Configuration Review: Verify the configuration settings related to the process that is generating the error. Ensure that all settings are correct and aligned with the business requirements.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that address this specific error. Applying the latest patches or updates may resolve the issue.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including the context in which it occurs.
  
  Related Information:
  
  Transaction Codes: Depending on where the error occurs, you may want to check transaction codes related to the specific module or process (e.g., MM, SD, PP).
  Logs and Traces: Review system logs (SM21) and application logs (SLG1) for additional information that may help diagnose the issue.
  Testing: If possible, replicate the error in a test environment to better understand the conditions that lead to the error.
  
  By following these steps, you should be able to identify the cause of the ECN803 error and implement a suitable solution.