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

ECN803 - Overview

• 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