How To Fix IDOC_ADAPTER418 - To display a structure you must first select an IDoc type

SAP Error Message - Details

• Message type: E = Error

• Message class: IDOC_ADAPTER - Messages for the IDoc Adapter

• Message number: 418

• Message text: To display a structure you must first select an IDoc type

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message IDOC_ADAPTER418 - To display a structure you must first select an IDoc type ?

  The SAP error message IDOC_ADAPTER418, which states "To display a structure you must first select an IDoc type," typically occurs when you are trying to view or work with an IDoc structure in the SAP system without having selected a specific IDoc type first. This error is common in scenarios involving IDoc processing, such as when using transaction codes like WE30 (IDoc Types) or WE60 (IDoc Documentation).
  Cause:
  The primary cause of this error is that the system requires you to specify an IDoc type before you can display or manipulate the associated structure. The IDoc type defines the format and structure of the data being exchanged, and without selecting one, the system does not know which structure you are referring to.
  Solution:
  To resolve this error, follow these steps:
  
  
  Select an IDoc Type:
  
  Navigate to the relevant transaction (e.g., WE30 or WE60).
  In the selection screen, you should see a field to enter or select an IDoc type.
  Choose the appropriate IDoc type from the list or enter it manually.
  
  
  
  Display the Structure:
  
  Once you have selected the IDoc type, you should be able to proceed to display the structure without encountering the error.
  
  
  
  Check for Typographical Errors:
  
  Ensure that the IDoc type you are trying to select is correctly spelled and exists in the system.
  
  
  
  Authorization:
  
  Make sure you have the necessary authorizations to view IDoc types and structures. Lack of authorization can sometimes lead to unexpected behavior.
  
  
  
  Related Information:
  
  IDoc Types: IDocs are structured data formats used for data interchange between SAP systems and external systems. Each IDoc type has a specific structure defined by segments and fields.
  Transaction Codes:
  
  WE30: Used to create or modify IDoc types.
  WE60: Used to display documentation for IDoc types.
  WE02: Used to monitor IDocs.
  
  
  IDoc Segments: Each IDoc type consists of segments, which are the building blocks of the IDoc structure. Each segment can contain multiple fields.
  SAP Documentation: For more detailed information, refer to SAP Help documentation or the SAP Community for discussions related to IDocs and their management.
  
  By following the above steps, you should be able to resolve the IDOC_ADAPTER418 error and successfully display the IDoc structure you need.