How To Fix AD212 - Structure type 'HEAD' is mandatory

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 212

• Message text: Structure type 'HEAD' is mandatory

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD212 - Structure type 'HEAD' is mandatory ?

  The SAP error message AD212, which states "Structure type 'HEAD' is mandatory," typically occurs in the context of SAP ABAP programming, particularly when dealing with data structures in function modules or when defining data types in your ABAP programs.
  Cause:
  The error indicates that a required structure type named 'HEAD' is missing or not defined in the context where it is being referenced. This could happen due to several reasons:
  
  Missing Definition: The structure 'HEAD' has not been defined in the program or function module.
  Incorrect Naming: There might be a typo in the name of the structure, or it might be referenced incorrectly.
  Scope Issues: The structure might be defined in a different scope or package that is not accessible from the current context.
  Transport Issues: If the structure was recently created or modified, it might not have been transported correctly to the system where the error is occurring.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Structure Definition:
  
  Go to the ABAP Dictionary (transaction SE11) and check if the structure 'HEAD' is defined.
  If it is not defined, you will need to create it.
  
  
  
  Verify Naming:
  
  Ensure that the name 'HEAD' is spelled correctly in your code. Check for any typographical errors.
  
  
  
  Check Scope and Accessibility:
  
  If 'HEAD' is defined in a different package or program, ensure that it is accessible from the current context. You may need to include the relevant package or use the correct namespace.
  
  
  
  Review Transport Requests:
  
  If the structure was recently created or modified, ensure that the transport request has been successfully imported into the target system.
  
  
  
  Consult Documentation:
  
  If 'HEAD' is a standard structure provided by SAP, refer to the SAP documentation or notes to ensure you are using it correctly.
  
  
  
  Debugging:
  
  If you are still facing issues, consider debugging the program to see where the structure is being referenced and why it is not found.
  
  
  
  Related Information:
  
  ABAP Dictionary (SE11): This is where you can create and manage data definitions, including structures, tables, and data elements.
  Function Modules: If the error occurs in a function module, check the interface and ensure that all required parameters and structures are correctly defined.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that might address this specific error or provide additional context.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.