How To Fix WF002 - The combination of parameter values is not allowed &

SAP Error Message - Details

• Message type: E = Error

• Message class: WF - Workflow: messages

• Message number: 002

• Message text: The combination of parameter values is not allowed &

Self-Explanatory Message

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• What is the cause and solution for SAP error message WF002 - The combination of parameter values is not allowed & ?

  SAP Error Message:
  
  WF002 - The combination of parameter values is not allowed &
  
  Cause:
  This error typically occurs in SAP Workflow when you try to start or execute a workflow with a set of parameter values that are not valid or allowed according to the workflow's configuration or the underlying business rules.
  More specifically, the error indicates that the combination of input parameters passed to a workflow container or a workflow step violates constraints defined in the workflow or the associated business object. This can happen due to:
  
  Incorrect or inconsistent parameter values being passed.
  Missing mandatory parameters.
  Parameters that do not comply with the expected data types or value ranges.
  Workflow container elements or binding rules that restrict certain combinations.
  Custom validations or user-exits in the workflow that reject the parameter combination.
  
  
  Solution:
  To resolve the WF002 error, follow these steps:
  
  
  Check Workflow Parameters:
  
  Review the parameters being passed to the workflow start event or the relevant step.
  Ensure all mandatory parameters are provided.
  Verify that the values conform to expected data types and allowed ranges.
  
  
  
  Analyze Workflow Container and Bindings:
  
  Go to the workflow builder (transaction SWDD).
  Check the container elements and their bindings.
  Make sure the parameter bindings do not cause conflicts or invalid combinations.
  
  
  
  Review Business Rules and Validations:
  
  Check if there are any custom validations, user-exits, or BADIs implemented that validate parameter combinations.
  Debug or analyze these validations to identify why the combination is rejected.
  
  
  
  Check Workflow Start Conditions:
  
  Sometimes, the workflow start conditions or event linkage may restrict certain parameter combinations.
  Verify the event linkage and start conditions in transaction SWETYPV or SWETYPV (Event linkage).
  
  
  
  Debug the Workflow:
  
  Use transaction SWUS or SWI1 to trace the workflow.
  Debug the workflow start or the step where the error occurs to see the exact parameter values and where the validation fails.
  
  
  
  Consult SAP Notes and Documentation:
  
  Search for SAP Notes related to WF002 for your specific SAP version.
  Sometimes, known issues or patches are available.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SWDD - Workflow Builder
  SWI1 - Workflow Log
  SWUS - Workflow Trace
  SWETYPV - Event Linkage
  SWI2_FREQ - Workflow Runtime Analysis
  
  
  
  SAP Help:
  
  SAP Workflow documentation on container elements and parameter binding.
  SAP Notes and KBAs related to workflow errors.
  
  
  
  Common Scenarios:
  
  Starting a workflow with incorrect object key or type.
  Passing inconsistent data from a custom program or user interface.
  Workflow container elements expecting a certain object type but receiving another.
  
  
  
  
  Summary:
  WF002 means the workflow engine detected an invalid combination of parameters. The fix involves verifying the parameters passed, checking workflow container bindings, and ensuring compliance with business rules and validations. Debugging and reviewing workflow configuration usually helps identify and correct the issue.