How To Fix WLC_PARALLEL020 - Table &1 for data preselection does not exist

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 020

• Message text: Table &1 for data preselection does not exist

What causes this issue?

The worklist should be selected from the table &V1&. However, the table
does not exist.

System Response

INCLUDE ISR_STOP

How to fix this error?

Enter existing tables in <DS:TRAN.WLCPARC>Customizing</> in the field
<DS:DE.WLC_PRESELECT_PRIMARY_TABLE>Primary tables</> and, if necessary,
also in the field <DS:DE.WLC_PRESELECT_SECONDARY_TABLE>Secondary tables
</>

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WLC_PARALLEL020 - Table &1 for data preselection does not exist ?

  The SAP error message WLC_PARALLEL020 indicates that a specific table required for data preselection does not exist. This error typically occurs in the context of SAP's Warehouse Management (WM) or Extended Warehouse Management (EWM) modules when the system is trying to perform operations that require data from a specific table that has not been defined or is missing.
  Cause:
  
  Missing Table: The table specified in the error message (denoted as &1) is not present in the database. This could be due to a failed installation, an incomplete configuration, or a deletion of the table.
  Incorrect Configuration: The system may be incorrectly configured, leading to the expectation of a table that should have been created during the setup process.
  Transport Issues: If the system has recently undergone a transport of changes, the table may not have been included or properly transported.
  Data Model Changes: Changes in the data model or updates to the system may have led to the removal or renaming of the table.
  
  Solution:
  
  Check Table Existence: Use transaction code SE11 (Data Dictionary) to check if the table exists in the system. If it does not exist, you may need to create it or restore it from a backup.
  Review Configuration: Ensure that all necessary configurations for the Warehouse Management or Extended Warehouse Management are correctly set up. This may involve checking customizing settings in SPRO.
  Transport Requests: If the issue arose after a transport, check the transport logs to ensure that all necessary objects were included and successfully imported.
  Recreate the Table: If the table is missing and you have the necessary definitions, you may need to recreate it. Consult with your technical team or SAP support for guidance on how to do this safely.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates that resolve the issue.
  System Logs: Review system logs (transaction SLG1) for any additional error messages or warnings that could provide more context about the issue.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for Warehouse Management or Extended Warehouse Management for detailed information on table structures and configurations.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  SAP Support: If the issue persists and you cannot resolve it, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.