How To Fix JSON_MESSAGES_WDR001 - Parsing of JSON string failed: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: JSON_MESSAGES_WDR - Message class for ABAP JSON library

• Message number: 001

• Message text: Parsing of JSON string failed: &1

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 JSON_MESSAGES_WDR001 - Parsing of JSON string failed: &1 ?

  The SAP error message JSON_MESSAGES_WDR001 Parsing of JSON string failed: &1 typically indicates that there is an issue with the JSON string being processed in your SAP application. This error can occur in various contexts, such as when working with SAP Fiori applications, SAP Gateway services, or any other scenario where JSON data is being parsed.
  Cause
  The error can be caused by several factors, including:
  
  
  Malformed JSON: The JSON string may not be properly formatted. Common issues include:
  
  Missing commas between key-value pairs.
  Unmatched brackets or braces.
  Incorrect use of quotes (e.g., using single quotes instead of double quotes).
  Trailing commas after the last item in an object or array.
  
  
  
  Encoding Issues: The JSON string may contain characters that are not properly encoded, leading to parsing errors.
  
  
  Data Type Mismatch: The JSON structure may not match the expected structure defined in the SAP application, leading to parsing failures.
  
  
  Empty or Null JSON: An empty or null JSON string can also trigger this error.
  
  
  Solution
  To resolve the JSON_MESSAGES_WDR001 error, you can take the following steps:
  
  
  Validate the JSON: Use a JSON validator tool (such as JSONLint) to check the syntax of the JSON string. This will help you identify any formatting issues.
  
  
  Check Encoding: Ensure that the JSON string is properly encoded. If you are generating the JSON dynamically, make sure that special characters are escaped correctly.
  
  
  Review the Structure: Verify that the JSON structure matches the expected format in your SAP application. Check the data model and ensure that all required fields are present.
  
  
  Debugging: If you have access to the application code, add debugging statements to log the JSON string before it is parsed. This can help you identify the exact content that is causing the error.
  
  
  Handle Empty Cases: Ensure that your application can handle cases where the JSON string might be empty or null.
  
  
  Consult Documentation: Refer to the SAP documentation or community forums for any specific guidelines related to the JSON structure expected by the particular SAP module you are working with.
  
  
  Related Information
  
  SAP Notes: Check SAP Notes for any known issues or patches related to JSON parsing errors in the specific version of SAP you are using.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Debugging Tools: Utilize SAP debugging tools to step through the code and identify where the JSON parsing is failing.
  
  By following these steps, you should be able to identify and resolve the cause of the JSON_MESSAGES_WDR001 error in your SAP application.