How To Fix STW_OL016 - Error when parsing JSON: &1 does not exist in target structure

SAP Error Message - Details

• Message type: E = Error

• Message class: STW_OL - Messages of the Object Layer (Stream Work Library)

• Message number: 016

• Message text: Error when parsing JSON: &1 does not exist in target structure

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message STW_OL016 - Error when parsing JSON: &1 does not exist in target structure ?

  The SAP error message STW_OL016 indicates that there is an issue with parsing JSON data, specifically that a certain field (denoted by &1) does not exist in the target structure defined in your SAP system. This error typically occurs when there is a mismatch between the JSON data being processed and the expected structure defined in the SAP application.
  Cause:
  
  
  Mismatch in JSON Structure: The JSON data being sent to the SAP system contains fields that do not match the expected fields in the target structure. This could be due to:
  
  Missing fields in the JSON.
  Extra fields in the JSON that are not defined in the target structure.
  Incorrect field names or data types.
  
  
  
  Changes in Data Model: If there have been recent changes to the data model or the target structure in SAP, the JSON data may not be updated accordingly.
  
  
  Incorrect Mapping: If you are using a middleware or an integration tool, the mapping between the JSON fields and the SAP structure may be incorrect.
  
  
  Solution:
  
  
  Check JSON Structure: Validate the JSON data being sent to ensure that it matches the expected structure in SAP. You can use JSON validators or tools to help with this.
  
  
  Update Target Structure: If the JSON data is correct and the target structure in SAP needs to be updated, you may need to modify the target structure to include the missing fields.
  
  
  Review Mapping: If you are using middleware, review the mapping configuration to ensure that all fields are correctly mapped between the JSON and the SAP structure.
  
  
  Debugging: Use debugging tools in SAP to trace the error and identify which specific field is causing the issue. This can help you pinpoint the exact mismatch.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific module or API you are working with to understand the expected structure and any recent changes that may have occurred.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on handling JSON parsing issues.
  Integration Tools: If you are using tools like SAP PI/PO, SAP CPI, or other middleware, consult their documentation for handling JSON data and error messages.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed.
  
  By following these steps, you should be able to identify the cause of the STW_OL016 error and implement a solution to resolve it.