How To Fix WLC_PARALLEL009 - Data preselection should use function module, but the name is missing

SAP Error Message - Details

• Message type: E = Error

• Message class: WLC_PARALLEL - Load Distribution and External Parallel Processing

• Message number: 009

• Message text: Data preselection should use function module, but the name is missing

What causes this issue?

Data preselection for external parallel processing the report &V1& be
carried out using a separate function module. However, no function
module was entered.

System Response

INCLUDE ISR_STOP

How to fix this error?

Enter the name of the function module that should carry out the data
preselection in the <DS:TRAN.WLCPARC>Customizing</> of the report &V1&
in the <ZH>Mandatory options</> view in the field
<DS:DE.WLC_PRESELECT_FUNCTION_MODULE>Function module</>. The interface
of the function module must be the same as the interface of function
module WLC_PRESELECT_EXAMPLE.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WLC_PARALLEL009 - Data preselection should use function module, but the name is missing ?

  The SAP error message WLC_PARALLEL009 indicates that there is an issue with the data preselection process in a parallel processing scenario. Specifically, it suggests that a function module is expected to be specified for data preselection, but the name of that function module is missing.
  Cause:
  The error typically arises in the context of parallel processing where the system expects a function module to handle data preselection. This can occur due to:
  
  Configuration Issues: The system may not be properly configured to specify the function module for data preselection.
  Missing Function Module: The function module that is supposed to be used for data preselection is either not defined or not available in the system.
  Custom Development: If there is custom code involved, it may not be correctly implemented or may have missing components.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Configuration:
  
  Go to the relevant configuration settings in your SAP system where the parallel processing is defined.
  Ensure that the function module for data preselection is correctly specified.
  
  
  
  Define the Function Module:
  
  If the function module is missing, you may need to create it or ensure that it is correctly defined in the system.
  The function module should implement the necessary logic for data preselection.
  
  
  
  Review Custom Code:
  
  If you are using custom code, review it to ensure that it correctly specifies the function module for data preselection.
  Check for any syntax errors or logical issues that may prevent the function module from being recognized.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to parallel processing and data preselection for any specific requirements or examples.
  
  
  
  Testing:
  
  After making the necessary changes, test the process again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Function Module Documentation: Review the documentation for the function module you intend to use for data preselection to ensure it meets the requirements.
  Parallel Processing: Familiarize yourself with how parallel processing works in SAP and the role of function modules in this context.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.