How To Fix /MSG/4_PM_MESSAGE056 - Transformation between tables and JSON failed: '&1&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /MSG/4_PM_MESSAGE -

• Message number: 056

• Message text: Transformation between tables and JSON failed: '&1&2'

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /MSG/4_PM_MESSAGE056 - Transformation between tables and JSON failed: '&1&2' ?

  The SAP error message /MSG/4_PM_MESSAGE056 Transformation between tables and JSON failed: '&1&2' typically indicates that there was an issue during the transformation process when converting data from SAP tables to JSON format. This can occur in various scenarios, such as when using SAP Gateway services, OData services, or other integration scenarios where data needs to be serialized into JSON.
  Possible Causes:
  
  Data Structure Issues: The data being transformed may not conform to the expected structure. This could be due to missing fields, incorrect data types, or unexpected null values.
  Mapping Errors: There may be issues with the mapping between the SAP data model and the JSON structure. If the mapping is not correctly defined, the transformation can fail.
  Configuration Issues: Incorrect configuration in the OData service or Gateway service can lead to transformation failures.
  Performance Issues: If the data set is too large, it may cause timeouts or memory issues during the transformation process.
  Authorization Issues: Lack of proper authorizations for accessing certain data can also lead to transformation failures.
  
  Solutions:
  
  Check Data Structure: Review the data being transformed to ensure it matches the expected structure. Look for any missing or null values that may cause issues.
  Review Mapping: Verify the mapping between the SAP data model and the JSON output. Ensure that all fields are correctly mapped and that data types are compatible.
  Configuration Review: Check the configuration settings of the OData service or Gateway service. Ensure that all necessary settings are correctly defined.
  Performance Optimization: If the data set is large, consider implementing pagination or filtering to reduce the amount of data being processed at one time.
  Authorization Check: Ensure that the user executing the transformation has the necessary authorizations to access the data being transformed.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  Debugging: Use transaction codes like /IWFND/ERROR_LOG to check for detailed error logs that can provide more context about the failure.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can provide insights or solutions.
  Documentation: Review the official SAP documentation for OData services and JSON transformation to ensure compliance with best practices.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.