How To Fix WLC_PARALLEL034 - Selection of table &1 is not restricted

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 034

• Message text: Selection of table &1 is not restricted

What causes this issue?

The system has determined that the worklist preselection from table
&V1& is not restricted. The selection conditions come from the variants
entered for the report that is to be parallel processed and from the
selection options in the selection screen that are defined in
<DS:TRAN.WLCPARC>Customizing</> in the <ZH>Additional selection
criteria </> view.

System Response

A worklist preselection that is not restricted means that the entire
contents of the table would be selected. This applies in a few cases.
The system has therefore automatically terminated the processing to
allow you to define the optimum values in Customizing.

How to fix this error?

The variants' values can only be taken into consideration if the
selection options are defined so that they clearly refer to table &V1&.
Otherwise they have to be copied over to the selection screen as
additional selection criteria.
The criteria rejected by the program and the tables selected are listed
in the report output.
For further information on why and how you define additional selection
criteria, see the <DS:RE.RWLC_PROCESS_IN_PARALLEL>Documentation</> in
the transaction <DS:TRAN.WLCPAR>WLCPAR</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WLC_PARALLEL034 - Selection of table &1 is not restricted ?

  The SAP error message WLC_PARALLEL034 indicates that the selection of a table (denoted as &1 in the message) is not restricted, which can lead to performance issues when processing large datasets in parallel processing scenarios. This error typically arises in the context of parallel processing in SAP, particularly when using the SAP Logistics Execution (LE) or Warehouse Management (WM) modules.
  Cause:
  The error occurs when a parallel processing job attempts to access a database table without any restrictions (e.g., without a WHERE clause or selection criteria). This can result in the job trying to process a large volume of data at once, which can lead to performance degradation or even system overload.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Add Selection Criteria: Ensure that your selection criteria for the table are properly defined. This means adding filters or conditions to limit the amount of data being processed in parallel. For example, if you are processing records from a large table, specify a date range, status, or other relevant fields to narrow down the selection.
  
  
  Review Parallel Processing Settings: Check the configuration settings for parallel processing in your SAP system. Ensure that the settings are optimized for the volume of data you are working with.
  
  
  Batch Processing: If applicable, consider breaking down the processing into smaller batches. This can help manage the load on the system and prevent the error from occurring.
  
  
  Consult Documentation: Review the SAP documentation related to the specific transaction or program you are using. There may be specific guidelines or best practices for handling large datasets in parallel processing.
  
  
  Debugging: If you have access to the ABAP code, you can debug the program to identify where the selection is being made and ensure that it includes appropriate restrictions.
  
  
  Contact SAP Support: If the issue persists and you are unable to resolve it, consider reaching out to SAP support for further assistance. They may provide insights specific to your system configuration or the particular transaction you are using.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may be involved in the process, such as those related to warehouse management or logistics execution.
  Performance Monitoring: Use SAP performance monitoring tools to analyze the impact of parallel processing on system performance and identify any bottlenecks.
  SAP Notes: Check for any SAP Notes related to the error message WLC_PARALLEL034, as there may be patches or updates that address known issues.
  
  By following these steps, you should be able to address the WLC_PARALLEL034 error and improve the performance of your parallel processing tasks in SAP.