How To Fix WEBDYNPRO_RT034 - Guideline &1 needs rendermode &2 but redirect not possible (Shell).

SAP Error Message - Details

• Message type: E = Error

• Message class: WEBDYNPRO_RT - Message class of Web Dynpro runtime

• Message number: 034

• Message text: Guideline &1 needs rendermode &2 but redirect not possible (Shell).

Self-Explanatory Message

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• What is the cause and solution for SAP error message WEBDYNPRO_RT034 - Guideline &1 needs rendermode &2 but redirect not possible (Shell). ?

  Certainly! Here's a detailed explanation of the SAP error message:
  
  SAP Error Message:
  WEBDYNPRO_RT034 Guideline &1 needs rendermode &2 but redirect not possible (Shell).
  
  Meaning / Cause:
  This error occurs in SAP Web Dynpro applications when a particular guideline (a UI or navigation rule) requires a specific render mode (such as full page, embedded, or modal dialog), but the system cannot perform a redirect to that render mode because the current context (usually the shell or container) does not allow it.
  In simpler terms:
  
  The Web Dynpro application or component expects to be displayed in a certain way (render mode).
  To achieve this, it tries to redirect or navigate accordingly.
  However, the current environment (often the SAP Fiori Launchpad shell or Web Dynpro ABAP shell) does not permit this redirect.
  Hence, the error is raised.
  
  
  Common Scenarios:
  
  Trying to open a Web Dynpro application in a modal dialog or popup when the shell does not support it.
  Navigation or UI guideline expects a full page reload or redirect, but the shell is embedded or does not allow navigation.
  Mismatch between the expected render mode and the actual container capabilities.
  
  
  Technical Background:
  
  Guidelines in Web Dynpro define how UI elements or navigation should behave.
  Render modes define how the UI is rendered: e.g., full page, embedded, modal dialog.
  The shell (like SAP Fiori Launchpad or Web Dynpro ABAP shell) controls navigation and rendering.
  Redirects are used to switch between render modes or applications.
  If the shell restricts redirects (e.g., due to security, session, or UI constraints), this error occurs.
  
  
  Solution / How to Fix:
  
  
  Check the Render Mode Configuration:
  
  Verify the render mode expected by the guideline.
  Adjust the application or component to use a render mode compatible with the shell.
  
  
  
  Adjust Navigation or UI Guidelines:
  
  Modify the navigation logic to avoid redirects that are not supported.
  Use supported navigation methods for the shell in use.
  
  
  
  Shell or Container Settings:
  
  If possible, configure the shell to allow the required redirect.
  For example, in SAP Fiori Launchpad, check if the target mapping supports the required render mode.
  
  
  
  Use Supported UI Patterns:
  
  Avoid opening modal dialogs or popups if the shell does not support them.
  Use embedded views or full page navigation as alternatives.
  
  
  
  Check SAP Notes and Patches:
  
  Sometimes, this error can be caused by bugs or missing patches.
  Search for relevant SAP Notes related to Web Dynpro render modes and navigation.
  
  
  
  Debugging:
  
  Use Web Dynpro trace and logs to identify where the redirect is attempted.
  Check the call stack and UI guideline processing.
  
  
  
  
  Related Information:
  
  SAP Web Dynpro Documentation: Understanding render modes and navigation.
  SAP Fiori Launchpad Configuration: How target mappings and navigation are handled.
  SAP Notes: Search for notes related to WEBDYNPRO_RT034 or render mode issues.
  SAP Community: Similar issues discussed in forums and blogs.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WEBDYNPRO_RT034 Guideline &1 needs rendermode &2 but redirect not possible (Shell).
  
  
  Cause
  Application expects a render mode requiring redirect, but shell/container disallows it.
  
  
  Solution
  Adjust render mode, navigation logic, or shell settings to allow or avoid redirect.
  
  
  Related Info
  SAP Notes, Web Dynpro and Fiori Launchpad docs, debugging navigation and UI guidelines.
  
  
  
  
  If you provide the exact guideline and render mode values (&1 and &2), I can help you with more specific advice.