How To Fix WER440 - ***** 441 - 459: Parameter type check ***********************************

SAP Error Message - Details

• Message type: E = Error

• Message class: WER - Messages for the package WER

• Message number: 440

• Message text: ***** 441 - 459: Parameter type check ***********************************

Self-Explanatory Message

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• What is the cause and solution for SAP error message WER440 - ***** 441 - 459: Parameter type check *********************************** ?

  Certainly! Here's a detailed explanation regarding the SAP error message **WER440 *** 441 - 459: Parameter type check:
  
  SAP Error Message: WER440 ***** 441 - 459: Parameter type check
  
  Cause
  This error typically occurs during the execution of workflows or function modules when there is a mismatch or inconsistency in the expected parameter types. Specifically:
  
  The workflow container or function module expects parameters of certain data types.
  The actual parameters passed do not match the expected types (e.g., passing a string where an integer is expected).
  This type mismatch leads to a parameter type check failure.
  It can also happen if the interface of a function module or method has changed but the workflow or calling program still uses the old parameter definitions.
  
  
  When does it occur?
  
  During workflow execution when binding container elements to method or function module parameters.
  When calling function modules or methods with incorrect parameter types.
  After transport or upgrade where interface definitions have changed.
  When custom developments or enhancements incorrectly define or pass parameters.
  
  
  Solution
  
  
  Check Parameter Definitions:
  
  Verify the parameter types defined in the workflow container or the calling program.
  Compare them with the parameter types expected by the function module or method interface.
  
  
  
  Adjust Parameter Bindings:
  
  In the workflow builder (transaction SWDD), check the container element types.
  Ensure that the container elements are correctly typed and match the expected parameter types of the called method or function module.
  
  
  
  Check Interface Changes:
  
  If the function module or method interface was recently changed (e.g., after a transport or upgrade), update the workflow or calling program accordingly.
  
  
  
  Use Correct Data Types:
  
  Make sure that the data types of the parameters passed are compatible.
  For example, if a parameter expects a structure, do not pass a simple data element.
  
  
  
  Debugging:
  
  Use the debugger to check the actual parameters passed at runtime.
  Identify where the mismatch occurs.
  
  
  
  Re-import or Re-generate Interfaces:
  
  If the interface is generated from an external source (e.g., RFC or BAPI), re-import or regenerate the interface to ensure consistency.
  
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SWDD - Workflow Builder (to check and adjust container elements and bindings)
  SE37 - Function Module Builder (to check function module interface)
  SE80 - Object Navigator (to check method interfaces)
  ST22 - Dump Analysis (to check for runtime errors related to this issue)
  
  
  
  SAP Notes:
  
  Check SAP Notes related to workflow parameter binding issues.
  Example: SAP Note 123456 (hypothetical) might describe similar parameter type check errors.
  
  
  
  Common Scenarios:
  
  After system upgrade or patch, interfaces might change.
  Custom workflows calling standard SAP function modules without updating parameter bindings.
  Transporting workflows between systems without adjusting container element types.
  
  
  
  
  Summary
  
  
  
  Aspect
  Description
  
  
  
  
  Cause
  Parameter type mismatch between workflow container elements and function module/method interface.
  
  
  Effect
  Workflow or function call fails with parameter type check error (WER440 ***** 441 - 459).
  
  
  Solution
  Verify and correct parameter types in workflow container and function/method interface.
  
  
  Tools
  SWDD, SE37, SE80, ST22 for analysis and correction.
  
  
  Prevention
  Keep interfaces and workflows in sync, especially after upgrades or transports.
  
  
  
  
  If you provide the exact context or the full error message text, I can help you with more specific guidance.