How To Fix WFCS053 - No key tables for function module & transferred &1 &2 &3

SAP Error Message - Details

• Message type: E = Error

• Message class: WFCS - Message Class for Store Forecasting (Dev. Package WFCS)

• Message number: 053

• Message text: No key tables for function module & transferred &1 &2 &3

Generated Include to Extension - FESSLERH - 25.08.2000
STYLE S_DOCUS1

What causes this issue?

During the forecast run, the function module interface was incorrectly
supplied. The key table used to read data from the database was empty.

System Response

The system could not continue processing data.

How to fix this error?

Start a forecast run, during which the system finds valid master and
movement data.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WFCS053 - No key tables for function module & transferred &1 &2 &3 ?

  The SAP error message:
  WFCS053 No key tables for function module & transferred &1 &2 &3
  typically occurs in the context of SAP Workflow when a function module is called that requires key tables for data transfer, but these key tables are not defined or missing.
  
  Explanation / Cause
  
  
  Context: In SAP Workflow, function modules are often used as container methods or as part of workflow steps. These function modules may require certain key tables to be defined to transfer data between the workflow container and the function module parameters.
  
  
  Cause: The error message indicates that for the specified function module (the name is in the message variable &), no key tables have been defined or assigned. Key tables are necessary to map the data correctly between the workflow container and the function module interface.
  
  
  This usually happens when:
  
  The function module is used in a workflow step or container method, but the key tables for the function module parameters are not maintained.
  The function module interface has table parameters, but the workflow container does not have corresponding key tables defined.
  The workflow container elements or the function module parameters are not properly linked.
  
  
  
  
  What are Key Tables?
  
  Key tables in SAP Workflow are used to map table parameters of function modules to workflow container elements.
  They define how the data is transferred between the workflow container and the function module's table parameters.
  Without key tables, the workflow engine cannot transfer the data correctly, leading to this error.
  
  
  How to Solve / Fix
  
  
  Check the Function Module Interface:
  
  Go to transaction SE37.
  Display the function module mentioned in the error message.
  Check the parameters, especially table parameters.
  
  
  
  Maintain Key Tables in Workflow:
  
  Go to transaction PFTC (Workflow Task Maintenance).
  Find the workflow task that uses the function module.
  Go to the Container tab.
  For each table parameter of the function module, ensure that a corresponding container element (table type) is defined.
  Then, go to the Methods tab or the step where the function module is called.
  Maintain the Key Tables for the function module parameters:
  
  Assign the container elements to the function module table parameters.
  This mapping tells the workflow how to transfer data.
  
  
  
  
  
  Use Transaction SWDD (Workflow Builder):
  
  Open the workflow definition.
  Locate the step calling the function module.
  Check the binding of the container elements to the function module parameters.
  Ensure that for table parameters, key tables are properly assigned.
  
  
  
  If the Function Module is Custom:
  
  Verify that the function module interface is designed correctly.
  Ensure that the parameters are consistent with the workflow container elements.
  
  
  
  Check SAP Notes / Documentation:
  
  Sometimes, specific SAP Notes address issues related to workflow container and function module integration.
  
  
  
  
  Additional Information
  
  This error is common when integrating custom function modules into SAP Workflow.
  Proper understanding of workflow container, container elements, and parameter binding is essential.
  Key tables are especially important for table parameters (type TABLE or STANDARD TABLE).
  If the function module has no table parameters, this error should not occur.
  The message variables &1, &2, &3 typically contain additional information such as the function module name and parameter names.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WFCS053 No key tables for function module & transferred &1 &2 &3
  
  
  Cause
  Missing key tables for function module parameters in workflow container mapping
  
  
  Effect
  Workflow cannot transfer table parameter data to/from function module
  
  
  Solution
  Define and maintain key tables in workflow task/container for the function module params
  
  
  Transactions
  SE37 (Function Module), PFTC (Task), SWDD (Workflow Builder)
  
  
  
  
  If you provide the exact function module name and workflow context, I can help you with more specific steps.