How To Fix CX_WDK_CONTROLLER318 - Unknown attribute &1 of table &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CX_WDK_CONTROLLER - FP/BE/BDC Controller Messages

• Message number: 318

• Message text: Unknown attribute &1 of table &2

What causes this issue?

In the Webdynpro context there is a table node &V2& with attribute &V1&.
The context node &V2& lies below the node DO_NOT_CHANGE, which implies
that a respective entry in the database table WDKFIELDS must exist.
However, this is not the case.

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?

If you manually added the context node &V2& or the attribute &V1&,
insert an entry into the table WDKFIELDS and set the field TECH_FIELD to
1. If you don't insert the entry, then during next context generation,
the context node &V2& or attribute &V1& would be removed and all related
UI-element bindings would get lost.
If the field is part of the transaction variant, then regenerate the
context; the entry in the table WDKFIELDS will be added automatically.
Then restart the program.

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 CX_WDK_CONTROLLER318 - Unknown attribute &1 of table &2 ?

  The SAP error message CX_WDK_CONTROLLER318 indicates that there is an issue with an unknown attribute in a specific table. This error typically arises in the context of Web Dynpro applications, where the framework is unable to find a specified attribute in the data model.
  Cause:
  
  Typographical Error: The attribute name specified in the code or configuration may have a typo or may not match the actual attribute name in the data model.
  Model Changes: The underlying data model may have changed, and the attribute may have been removed or renamed.
  Incorrect Mapping: There may be an incorrect mapping between the UI elements and the data model attributes.
  Version Mismatch: If there are multiple versions of the application or components, there may be inconsistencies in the data model across versions.
  
  Solution:
  
  Check Attribute Name: Verify that the attribute name specified in the error message matches exactly with the attribute defined in the data model. Look for any typographical errors.
  Review Data Model: Check the data model to ensure that the attribute exists. If it has been removed or renamed, update the code or configuration accordingly.
  Update Mappings: If the UI elements are mapped to the data model attributes, ensure that the mappings are correct and reflect the current state of the data model.
  Debugging: Use debugging tools to trace the execution and identify where the error is occurring. This can help pinpoint the exact location in the code where the unknown attribute is being referenced.
  Consult Documentation: Review the documentation for the specific Web Dynpro component or application to ensure that you are using the correct attributes and data model.
  Check for Updates: If you are using a third-party component or an SAP standard application, check for any updates or patches that may address this issue.
  
  Related Information:
  
  Web Dynpro Documentation: Familiarize yourself with the Web Dynpro framework and its data binding concepts.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Community Forums: Engage with the SAP community forums or SAP Community Network (SCN) for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.