How To Fix WD302 - Import properties or export properties for container element & changed

SAP Error Message - Details

• Message type: E = Error

• Message class: WD - Workflow definition

• Message number: 302

• Message text: Import properties or export properties for container element & changed

What causes this issue?

You have changed the <ZH>import indicator</> or the <ZH>export
indicator</> for container element &v1&.

System Response

If you have set one or both of these indicators, the container element
is part of the workflow definition interface. If the import indicator
is set, you can assign values to the container element at the start of
workflow. If the export indicator is set, you can return the value of
the container element to a superordinate workflow.
Changes to these indicators are not subject to versioning and affect
<ZH>all</> versions of the workflow.

How to fix this error?

You should only delete an import or export indicator if the container
element is not used in <ZH>any</> version of the workflow in the
interface.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WD302 - Import properties or export properties for container element & changed ?

  Certainly! Here's a detailed explanation for the SAP Web Dynpro error message:
  
  SAP Error Message:
  WD302 Import properties or export properties for container element & changed
  
  Cause:
  This error occurs in SAP Web Dynpro when there is an inconsistency or conflict in the import/export properties of a container UI element. Specifically, the message indicates that the import or export properties of a container element have been changed in a way that is not consistent with the existing configuration or usage.
  Common causes include:
  
  Changing the import/export properties of a container element after it has been used or referenced elsewhere in the Web Dynpro component.
  Modifying the interface of a component controller or view controller where the container element's properties are bound.
  Inconsistent or conflicting property definitions between the container element and its usage context.
  Attempting to change the import/export properties of a container element that is already bound to a context node or UI element.
  
  
  Explanation:
  In Web Dynpro, container elements (like UI elements or custom controllers) can have import and export properties that define how data is passed into or out of the element. These properties are part of the element's interface and are used for data binding and communication between components or views.
  If you change these properties after the element has been used or referenced, the system detects this inconsistency and raises the WD302 error to prevent runtime issues.
  
  Solution:
  To resolve the WD302 error, follow these steps:
  
  
  Check the Container Element Properties:
  
  Open the Web Dynpro component or view where the container element is defined.
  Review the import and export properties of the container element.
  
  
  
  Undo or Adjust Changes:
  
  If you recently changed the import/export properties, consider reverting to the previous settings.
  If changes are necessary, ensure that all references and bindings to this container element are updated accordingly.
  
  
  
  Check Bindings and References:
  
  Verify all places where the container element is used or referenced.
  Update the bindings to match the new import/export properties.
  
  
  
  Rebuild and Activate:
  
  After making corrections, rebuild and activate the Web Dynpro component.
  Sometimes, deactivating and reactivating the component or related components helps clear inconsistencies.
  
  
  
  Clear Cache:
  
  Clear the SAP GUI and Web Dynpro caches to ensure no old metadata is causing conflicts.
  
  
  
  If Necessary, Remove and Recreate:
  
  In some cases, if the container element is heavily used and changes are complex, it might be easier to remove the container element and recreate it with the correct properties.
  
  
  
  
  Related Information:
  
  SAP Note: Check for any SAP Notes related to WD302 for your specific SAP NetWeaver version.
  Web Dynpro Documentation: Review SAP Web Dynpro ABAP documentation on container elements and their import/export properties.
  Development Best Practices: Avoid changing import/export properties of container elements after they have been widely used or referenced.
  Debugging: Use the Web Dynpro debugger and trace tools to identify where the inconsistency arises.
  
  
  Summary:
  
  
  
  Aspect
  Description
  
  
  
  
  Cause
  Import/export properties of a container element were changed inconsistently or after usage.
  
  
  Effect
  SAP raises WD302 error to prevent runtime issues due to inconsistent interface definitions.
  
  
  Solution
  Revert or adjust import/export properties, update all references, rebuild and activate.
  
  
  Prevention
  Plan container element interfaces carefully and avoid changing properties after usage.
  
  
  
  
  If you provide the exact context or code snippet where this error occurs, I can help you with more specific guidance.