How To Fix WK318 - Error in function module &.

SAP Error Message - Details

• Message type: E = Error

• Message class: WK - BPT: Messages integr. inbox

• Message number: 318

• Message text: Error in function module &.

Self-Explanatory Message

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• What is the cause and solution for SAP error message WK318 - Error in function module &. ?

  Certainly! Here's a detailed explanation regarding the SAP error message WK318: Error in function module &.
  
  SAP Error Message: WK318 - Error in function module &.
  
  1. Cause
  
  The error message WK318 occurs during workflow processing in SAP.
  It indicates that an error happened inside a function module that is called as part of a workflow step.
  The placeholder & in the message is replaced by the actual function module name where the error occurred.
  Common causes include:
  
  The function module encountered a runtime error (e.g., dump, exception).
  Missing or incorrect input parameters passed to the function module.
  Authorization issues preventing the function module from executing properly.
  System or configuration issues affecting the function module.
  Data inconsistencies or missing data required by the function module.
  
  
  
  
  2. Solution
  To resolve the WK318 error, follow these steps:
  a) Identify the Function Module
  
  Check the exact function module name in the error message (the & is replaced by the function module name).
  Example: WK318 Error in function module SAP_WAPI_CREATE_EVENT.
  
  b) Analyze the Function Module
  
  Use transaction SE37 to test the function module with the input parameters.
  Check if the function module runs successfully or raises an error.
  Review the function module code or documentation to understand its requirements.
  
  c) Check Workflow Logs
  
  Use transaction SWI1 or SWI2_DIAG to analyze the workflow log.
  Look for detailed error messages or dumps related to the function module call.
  Identify the step in the workflow where the error occurs.
  
  d) Review Input Data
  
  Verify that the data passed to the function module is correct and complete.
  Check for missing or incorrect parameters in the workflow container or task.
  
  e) Check Authorizations
  
  Ensure the user executing the workflow has the necessary authorizations to run the function module.
  Use transaction SU53 after the error occurs to check for authorization failures.
  
  f) Debugging
  
  If necessary, debug the workflow step or function module to find the exact cause.
  Set breakpoints in the function module and trigger the workflow step.
  
  g) Apply SAP Notes / Patches
  
  Search for SAP Notes related to the function module or workflow error.
  Apply relevant corrections or patches if available.
  
  
  3. Related Information
  
  
  Transaction Codes:
  
  SWI1 - Workflow log analysis
  SWI2_DIAG - Workflow diagnosis
  SE37 - Function module test
  ST22 - Dump analysis (check for runtime errors)
  SU53 - Authorization check
  
  
  
  Common Function Modules in Workflow:
  
  SAP_WAPI_CREATE_EVENT
  SAP_WAPI_START_WORKFLOW
  SAP_WAPI_WORKITEM_COMPLETE
  Errors in these modules often cause WK318.
  
  
  
  SAP Notes:
  
  Search SAP Support Portal for notes related to the specific function module.
  Example search: "WK318 error in function module SAP_WAPI_CREATE_EVENT"
  
  
  
  General Advice:
  
  Always ensure the workflow container has the correct data.
  Check for system inconsistencies or transport issues.
  Review recent changes in workflows or related customizing.
  
  
  
  
  If you provide the exact function module name or additional context, I can help you with more specific troubleshooting steps.