How To Fix WD346 - Rule & cannot be used for this function

SAP Error Message - Details

• Message type: E = Error

• Message class: WD - Workflow definition

• Message number: 346

• Message text: Rule & cannot be used for this function

What causes this issue?

The WebFlow rules of the Web activity must be designed for the
respective action, meaning they must be of the relevant rule type.

System Response

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

How to fix this error?

Create the relevant rules in rule maintenance (transaction
<DS:TRAN.PFAC>PFAC</>).

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WD346 - Rule & cannot be used for this function ?

  The SAP error message WD346: "Rule & cannot be used for this function" typically occurs in the context of Web Dynpro ABAP development. Here's a detailed explanation of the cause, solution, and related information:
  
  Cause
  
  Context: The error arises when a rule (such as a context mapping rule, value mapping rule, or any other Web Dynpro rule) is used in a place or function where it is not allowed or supported.
  Specific Reason: The rule you are trying to apply is either incompatible with the function or method you are using it in, or the rule is not designed to be used in that particular context.
  For example, you might be trying to use a context mapping rule in a place where only a value mapping rule is allowed, or vice versa.
  Another common cause is that the rule is not properly defined or activated, or the function expects a different type of input.
  
  
  Solution
  
  
  Check the Rule Type:
  
  Verify the type of rule you are using (context mapping, value mapping, etc.).
  Ensure that the function or method you are calling supports this type of rule.
  
  
  
  Review the Function Documentation:
  
  Look up the SAP documentation or API help for the function where the rule is applied.
  Confirm what kind of rules are allowed.
  
  
  
  Correct the Rule Usage:
  
  If you are using the wrong type of rule, replace it with the correct one.
  If the rule is not applicable, remove it or find an alternative approach.
  
  
  
  Activate and Check the Rule:
  
  Make sure the rule is active and correctly defined in the Web Dynpro component.
  Check for any syntax or semantic errors in the rule definition.
  
  
  
  Debugging:
  
  Use the debugger to trace where the rule is applied.
  Check the runtime values and the context to understand why the function rejects the rule.
  
  
  
  SAP Notes and Support:
  
  Search for SAP Notes related to message WD346 for any known issues or patches.
  Sometimes, specific versions or patches of SAP NetWeaver or Web Dynpro have bugs related to rule handling.
  
  
  
  
  Related Information
  
  
  Web Dynpro ABAP Rules:
  
  Rules in Web Dynpro are used for mapping and transforming data between contexts or between UI elements and backend data.
  Types include Context Mapping Rules, Value Mapping Rules, and Conversion Rules.
  
  
  
  Common Scenarios:
  
  Using a context mapping rule in a place where only a value mapping rule is allowed.
  Applying a rule in a method parameter that expects a different data type or structure.
  
  
  
  SAP Documentation:
  
  Refer to the SAP Help Portal for Web Dynpro ABAP rules and their usage.
  Check the Web Dynpro ABAP Programming Guide for detailed explanations on rules.
  
  
  
  Example:
  
  If you have a context mapping rule named Z_MAP_RULE and you try to use it in a function that expects a value mapping rule, you will get WD346.
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WD346: Rule & cannot be used for this function
  
  
  Cause
  Using a rule in an unsupported context or function; incompatible rule type
  
  
  Solution
  Verify rule type, check function requirements, correct or remove the rule, activate rule
  
  
  Related
  Web Dynpro ABAP rules, context mapping, value mapping, SAP Notes, debugging
  
  
  
  
  If you provide the exact scenario or code snippet where this error occurs, I can help you with a more specific solution.