How To Fix /SCMTMS/AC020 - Test &3: Unknown field &2 for AC &1 at runtime (not in MT_AC_ADM)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMTMS/AC -

• Message number: 020

• Message text: Test &3: Unknown field &2 for AC &1 at runtime (not in MT_AC_ADM)

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 /SCMTMS/AC020 - Test &3: Unknown field &2 for AC &1 at runtime (not in MT_AC_ADM) ?

  The SAP error message /SCMTMS/AC020 Test &3: Unknown field &2 for AC &1 at runtime (not in MT_AC_ADM) typically occurs in the context of SAP Transportation Management (TM) when there is an issue related to the configuration or data model of the application. Here’s a breakdown of the components of the error message and potential solutions:
  Cause:
  
  Unknown Field: The error indicates that the system is trying to access a field (&2) that is not recognized or does not exist in the context of the application component (AC &1).
  Data Model Issues: This could be due to changes in the data model, such as missing or incorrectly configured fields in the application configuration.
  Custom Development: If there are custom enhancements or developments, they might be referencing fields that are not available in the standard data model.
  Transport Issues: If there have been recent transports or changes in the system, it’s possible that the necessary objects or configurations were not transported correctly.
  
  Solution:
  
  Check Configuration: Review the configuration settings for the application component (AC &1) to ensure that all necessary fields are defined and correctly configured.
  Debugging: Use the debugger to trace the execution and identify where the unknown field is being referenced. This can help pinpoint the exact location in the code or configuration that is causing the issue.
  Review Custom Code: If there are custom developments, check the code for any references to the unknown field and ensure that it is correctly defined in the data model.
  Data Model Consistency: Ensure that the data model is consistent across the system. If there have been recent changes, verify that all necessary updates have been applied.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide guidance on similar issues.
  Consult Documentation: Review the official SAP documentation for Transportation Management to understand the expected fields and configurations for the application component in question.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like /SCMTMS/AC to access the application component settings or /SCMTMS/ADM for administration settings.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Support: If the issue persists and you are unable to resolve it, consider reaching out to SAP Support for assistance, providing them with the full error message and context.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.