How To Fix /SAPTRX/ASC129 - Specify an existing message structure before choosing a field name

/SAPTRX/ASC129 - Overview

• Message type: E = Error

• Message class: /SAPTRX/ASC -

• Message number: 129

• Message text: Specify an existing message structure before choosing a field name

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 /SAPTRX/ASC129 - Specify an existing message structure before choosing a field name ?

  The SAP error message /SAPTRX/ASC129 Specify an existing message structure before choosing a field name typically occurs in the context of working with message structures in SAP, particularly when you are trying to define or manipulate message types or structures in the Application Interface Framework (AIF) or similar areas.
  
  Cause:
  This error indicates that the system expects you to specify a message structure before you can select a field name. In other words, the system needs to know which message structure you are working with in order to provide you with the relevant fields that belong to that structure. If you attempt to select a field without having a message structure defined or selected, the system will throw this error.
  
  Solution:
  To resolve this error, follow these steps:
  
  
  Define or Select a Message Structure:
  
  Navigate to the relevant transaction or configuration area where you are working with message structures.
  Ensure that you have defined a message structure