How To Fix WK302 - Error when structuring the control in program &

SAP Error Message - Details

• Message type: E = Error

• Message class: WK - BPT: Messages integr. inbox

• Message number: 302

• Message text: Error when structuring the control in program &

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WK302 - Error when structuring the control in program & ?

  SAP Error Message:
  
  WK302 - Error when structuring the control in program &
  
  Cause:
  The error WK302 typically occurs in the SAP Workflow environment. It indicates that there is a problem during the structuring phase of the workflow container in the specified program (the program name is shown in place of the "&" in the actual message).
  More specifically, this error arises when the workflow runtime tries to structure or fill the workflow container with data, but encounters an issue such as:
  
  The container element expected by the workflow is missing or not properly defined.
  The data object or structure used in the workflow container does not match the expected type.
  There is a mismatch between the workflow container element and the actual data passed from the program.
  The program or method that is supposed to fill the container is not correctly implemented or has runtime errors.
  The workflow container element is not properly mapped or the container element name is incorrect.
  
  
  Solution:
  To resolve WK302, follow these steps:
  
  
  Check the Workflow Container Definition:
  
  Go to the workflow builder (transaction SWDD).
  Open the workflow and check the container elements.
  Verify that all container elements are correctly defined and have the correct data types.
  
  
  
  Check the Program or Method:
  
  Identify the program mentioned in the error message.
  Review the code that structures or fills the workflow container.
  Ensure that the data passed to the container elements matches the expected types.
  Check for any runtime errors or exceptions in the program.
  
  
  
  Verify Container Mapping:
  
  In the workflow step where the error occurs, check the container mapping.
  Make sure the source and target container elements are correctly mapped.
  Ensure that the names and types correspond exactly.
  
  
  
  Test the Workflow Step:
  
  Use the workflow test tools (SWUS or SWI1) to simulate the workflow step.
  Check if the container is filled correctly without errors.
  
  
  
  Check for Missing or Incorrect Data:
  
  Sometimes the data passed to the workflow container is incomplete or incorrect.
  Verify the input data and ensure all required fields are populated.
  
  
  
  Debugging:
  
  If the above steps do not resolve the issue, debug the workflow container structuring.
  Set breakpoints in the program or method that fills the container.
  Trace the data flow and identify where the mismatch or error occurs.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SWDD - Workflow Builder
  SWI1 - Workflow Log
  SWUS - Workflow Test
  SWI2_FREQ - Workflow Runtime Errors
  
  
  
  SAP Notes:
  
  Check SAP Notes related to WK302 for specific patches or known issues.
  Example: SAP Note 123456 (replace with actual note number if available)
  
  
  
  Common Scenarios:
  
  WK302 often appears after transport or changes in workflow definitions.
  It can also occur if the underlying data structures (e.g., BOR objects) have changed.
  
  
  
  Documentation:
  
  SAP Help Portal on Workflow Container and Workflow Runtime.
  SAP Community forums for similar issues and solutions.
  
  
  
  
  Summary:
  WK302 error means the workflow container could not be structured properly due to mismatches or missing data in the container elements during runtime. The solution involves verifying container definitions, data types, container mappings, and the program logic that fills the container.
  
  If you provide the exact program name or workflow step, I can help you with more specific guidance.