How To Fix RMSL_WUI020 - Interface parameter was not filled correctly

SAP Error Message - Details

• Message type: E = Error

• Message class: RMSL_WUI - Labeling Web UI: RMSL Class Messages Converted for Web UI

• Message number: 020

• Message text: Interface parameter was not filled correctly

What causes this issue?

One of the following values was expected in the LINEMODE field: 'I' for
INSERT, 'D' for DELETE, or 'U' for UPDATE.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RMSL_WUI020 - Interface parameter was not filled correctly ?

  The SAP error message RMSL_WUI020, which states "Interface parameter was not filled correctly," typically occurs in the context of the SAP Retail Management System (RMS) or related applications. This error indicates that there is an issue with the parameters being passed to a function module or interface, which may not be filled out correctly or may be missing required values.
  Causes:
  
  Missing Parameters: Required parameters for the interface are not provided or are left blank.
  Incorrect Data Types: The data types of the parameters being passed do not match the expected types defined in the interface.
  Invalid Values: The values provided for the parameters may not be valid or may not meet the expected criteria (e.g., out of range, incorrect format).
  Configuration Issues: There may be configuration settings in the system that are not set up correctly, leading to the interface not functioning as expected.
  Custom Code Issues: If there is custom code involved, it may not be handling the parameters correctly.
  
  Solutions:
  
  Check Parameter Mapping: Review the interface documentation to ensure that all required parameters are being filled correctly and that they are mapped properly.
  Validate Data Types: Ensure that the data types of the parameters being passed match the expected types. For example, if a parameter expects a numeric value, ensure that a string is not being passed.
  Review Input Values: Check the values being passed to the interface for validity. Ensure they conform to any constraints or formats required by the interface.
  Debugging: Use debugging tools in SAP to trace the execution of the program and identify where the parameters are not being filled correctly.
  Consult Documentation: Refer to SAP documentation or notes related to the specific interface you are working with for any known issues or additional configuration steps.
  Check Custom Code: If there is custom code involved, review it to ensure that it is correctly populating the parameters and handling any exceptions.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Use transaction codes like SE37 (Function Builder) or SE80 (Object Navigator) to examine the function modules or interfaces involved.
  Community Forums: Consider searching or posting in SAP community forums or support channels for additional insights from other users who may have encountered the same issue.
  
  If the problem persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.