How To Fix R8656 - Field &1: Key field after Dictionary property (such as extract structure)

SAP Error Message - Details

• Message type: E = Error

• Message class: R8 - Messages from the meta data generation

• Message number: 656

• Message text: Field &1: Key field after Dictionary property (such as extract structure)

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 R8656 - Field &1: Key field after Dictionary property (such as extract structure) ?

  The SAP error message R8656 typically indicates an issue related to the definition of a key field in a data structure, particularly in the context of an extract structure or a similar dictionary object. This error often arises when the key field is not properly defined or is in conflict with the expected properties of the data structure.
  Cause:
  
  Incorrect Key Field Definition: The key field may not be defined correctly in the data dictionary. This could be due to missing attributes or incorrect data types.
  Inconsistent Data Structure: The structure may have been modified, and the key field does not align with the expected properties of the extract structure.
  Field Properties: The field may not have the necessary properties set (e.g., it may not be marked as a key field when it should be).
  Data Element Issues: The data element associated with the field may have issues, such as being inactive or incorrectly defined.
  
  Solution:
  
  Check Field Definition: Go to the Data Dictionary (SE11) and check the definition of the field in question. Ensure that it is correctly defined as a key field.
  Review Extract Structure: If the error is related to an extract structure, review the structure definition to ensure that all key fields are properly defined and that there are no conflicts.
  Adjust Properties: If necessary, adjust the properties of the field to ensure it meets the requirements for a key field.
  Activate Objects: If you have made changes to the data element or structure, make sure to activate them to ensure that the changes take effect.
  Check Dependencies: Look for any dependencies or references to the field in other objects (like programs, function modules, etc.) that may be causing the issue.
  
  Related Information:
  
  Transaction Codes: Use SE11 (Data Dictionary) to check the field definitions and SE14 (Database Utility) to check for database-related issues.
  Documentation: Refer to SAP documentation for guidelines on defining key fields and extract structures.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  Debugging: If the issue persists, consider debugging the program or transaction that triggers the error to identify the root cause.
  
  By following these steps, you should be able to resolve the R8656 error and ensure that your data structure is correctly defined.