How To Fix WZ327 - Errors in parameter values for method 'process'

SAP Error Message - Details

• Message type: E = Error

• Message class: WZ - Workflow: Model objects

• Message number: 327

• Message text: Errors in parameter values for method 'process'

What causes this issue?

The method parameters <ZH>R3FForm</>, <ZH>R3FFormType</> or <ZH>work
item</> have no values.

System Response

The method <ZH>Process</> of the object type <ZH>FORM</> or a
<DS:GLOS.36AAA2749235503BE10000009B38F9B6>subtype</> cannot be
executed.

How to fix this error?

Ensure that all the parameters have values. If you use the method in
execution of the work item, you need the following binding from the
task container to the method container (note the third line in
particular):
R3FFORM,,<==,,<(>&<)>R3FFORM<(>&<)>
R3FFORMTYPE,,<==,,<(>&<)>R3FFORMTYPE<(>&<)>
WORKITEM,,<==,,<(>&<)>_WORKITEM<(>&<)>

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WZ327 - Errors in parameter values for method 'process' ?

  SAP Error Message:
  
  WZ327 Errors in parameter values for method 'process'
  
  Cause
  This error typically occurs in SAP Workflow when the method process is called with incorrect or invalid parameter values. The workflow runtime engine validates the parameters passed to the method, and if any parameter is missing, has an unexpected type, or contains invalid data, it raises this error.
  Common causes include:
  
  Incorrect binding of parameters in the workflow definition.
  Missing mandatory parameters for the method.
  Data type mismatches between the expected method parameters and the actual values passed.
  Inconsistent or incomplete data passed from the triggering event or preceding workflow step.
  Custom method implementations that expect specific parameter formats or values.
  
  
  Solution
  
  
  Check Parameter Bindings:
  
  Go to the workflow builder (transaction SWDD).
  Open the relevant workflow and locate the step where the method process is called.
  Verify the parameter bindings for the method. Ensure all required parameters are correctly bound to workflow container elements or constants.
  
  
  
  Validate Data Types:
  
  Confirm that the data types of the parameters passed match the method’s signature.
  Use transaction SE24 to check the method signature in the class where process is implemented.
  
  
  
  Check Workflow Container:
  
  Ensure that the workflow container has all the necessary data elements filled before the method is called.
  Use transaction SWUS or SWI1 to analyze the workflow runtime and container contents.
  
  
  
  Debug the Workflow:
  
  Use the SAP debugger to step through the workflow execution.
  Set breakpoints in the method process implementation to inspect incoming parameters.
  
  
  
  Review Custom Code:
  
  If process is a custom method, review the code for parameter validation logic.
  Add error handling or default values if necessary.
  
  
  
  Check for SAP Notes:
  
  Search the SAP Support Portal for notes related to WZ327 or the specific workflow scenario.
  Apply any relevant patches or corrections.
  
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SWDD – Workflow Builder
  SE24 – Class Builder (to check method signatures)
  SWUS – Workflow Runtime Analysis
  SWI1 – Workflow Log
  
  
  
  SAP Help:
  
  SAP Workflow documentation on method calls and parameter binding.
  SAP Notes and Knowledge Base Articles related to workflow errors.
  
  
  
  Common Scenarios:
  
  This error often appears in workflows involving custom classes or methods.
  It may also occur after transport/import of workflows if container elements or bindings are not properly adjusted.
  
  
  
  
  If you provide the exact workflow scenario or the class/method details, I can help you with more specific guidance.