How To Fix SWDP_WDY_MD_ADT029 - Parameter &1: property "Optional"/"Default value" not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: SWDP_WDY_MD_ADT - Web Dynpro Metadata ADT

• Message number: 029

• Message text: Parameter &1: property "Optional"/"Default value" not allowed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SWDP_WDY_MD_ADT029 - Parameter &1: property "Optional"/"Default value" not allowed ?

  The SAP error message SWDP_WDY_MD_ADT029 typically occurs in the context of SAP Web Dynpro applications when there is an issue with the configuration of a property in a Web Dynpro component. This error indicates that a property is being defined with an "Optional" or "Default value" setting that is not allowed for that specific property.
  Cause:
  
  Incorrect Property Configuration: The property in question is likely defined in a way that does not comply with the rules of the Web Dynpro framework. For example, certain properties may not support default values or may not be allowed to be optional.
  Incompatibility with Data Types: The data type of the property may not support the optional or default value settings.
  Framework Limitations: Some properties are inherently required to have values and cannot be left optional or assigned a default value.
  
  Solution:
  
  Review Property Settings: Go to the Web Dynpro component in the SAP Web Dynpro Workbench and check the properties of the relevant element. Ensure that the property is not set to "Optional" or does not have a "Default value" if it is not allowed.
  Consult Documentation: Refer to the SAP documentation for Web Dynpro to understand the specific properties and their allowed configurations. This will help you identify which properties can be optional or have default values.
  Adjust Data Types: If the property is of a certain data type that does not support optional/default settings, consider changing the data type or removing the optional/default configuration.
  Check for Updates: Ensure that your SAP system is up to date, as there may be patches or updates that address known issues with property configurations.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to Web Dynpro and the specific error message for any known issues or additional guidance.
  Web Dynpro Documentation: Review the official SAP Web Dynpro documentation for best practices on property definitions and configurations.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed, providing insights or solutions from other users.
  
  By following these steps, you should be able to resolve the SWDP_WDY_MD_ADT029 error and correctly configure your Web Dynpro application properties.