How To Fix E2270 - Table category 'Structure' cannot be changed (deep structure)

SAP Error Message - Details

• Message type: E = Error

• Message class: E2 - DE Data Dictionary

• Message number: 270

• Message text: Table category 'Structure' cannot be changed (deep structure)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message E2270 - Table category 'Structure' cannot be changed (deep structure) ?

  The SAP error message E2270, which states "Table category 'Structure' cannot be changed (deep structure)," typically occurs when you are trying to modify a table that is defined as a structure in the Data Dictionary (DDIC) but is being treated as a deep structure. This can happen in various scenarios, such as when you are trying to change the definition of a table or structure that has already been defined in a way that does not allow for certain modifications.
  Cause:
  
  Deep Structure Definition: The table or structure you are trying to modify is defined as a deep structure. Deep structures are those that contain nested tables or structures, and SAP restricts certain changes to maintain data integrity.
  Existing Dependencies: There may be existing dependencies or references to the structure that prevent changes. For example, if the structure is used in other programs, function modules, or data elements, SAP will restrict modifications to avoid breaking those dependencies.
  Incorrect Change Attempt: You might be trying to change the category of the table or structure from a structure to a different type, which is not allowed.
  
  Solution:
  
  Review Structure Definition: Check the definition of the structure or table in the Data Dictionary (SE11). Ensure that you understand its current configuration and why it is classified as a deep structure.
  Avoid Changing Table Category: If you need to make changes, consider whether you can achieve your goal without changing the table category. For example, you might be able to add fields or modify existing fields without changing the overall structure type.
  Create a New Structure: If significant changes are required that cannot be made to the existing structure, consider creating a new structure or table that meets your requirements. You can then update any dependent objects to use the new structure.
  Check Dependencies: Use transaction SE11 to check for any dependencies or references to the structure. If there are many dependencies, you may need to analyze the impact of your changes carefully.
  Consult Documentation: Review SAP documentation or consult with your SAP Basis or ABAP team for best practices regarding changes to deep structures.
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), SE37 (Function Module), SE24 (Class Builder).
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to deep structures or the error message E2270.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to address the E2270 error and proceed with your development work in SAP.