How To Fix ED156 - Function not supported when modifying structures

SAP Error Message - Details

• Message type: E = Error

• Message class: ED - ABAP/4 Editor messages

• Message number: 156

• Message text: Function not supported when modifying structures

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ED156 - Function not supported when modifying structures ?

  The SAP error message ED156 ("Function not supported") typically occurs when you attempt to modify a structure in a way that is not allowed by the system. This can happen in various contexts, such as when working with data dictionary objects or when trying to change the structure of a table or view that is not modifiable.
  Causes:
  
  Non-modifiable Structures: The structure you are trying to modify may be a standard SAP structure or a structure that is locked for modification.
  Transport Layer Issues: If the structure is part of a transport request that is not released or is in a different transport layer, modifications may be restricted.
  Authorization Issues: You may not have the necessary authorizations to modify the structure.
  System Restrictions: Certain system settings or configurations may prevent modifications to specific structures.
  
  Solutions:
  
  Check Structure Type: Verify if the structure is a standard SAP structure. If it is, you may need to create a Z-structure