How To Fix EM020 - No generation indicator has been set for the specified structure

SAP Error Message - Details

• Message type: E = Error

• Message class: EM - IS-U Migration

• Message number: 020

• Message text: No generation indicator has been set for the specified structure

What causes this issue?

The structure will be not be taken into account at the next report
generation.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Set the generation indicator for the structure so that the conversion
rules are taken into account.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EM020 - No generation indicator has been set for the specified structure ?

  The SAP error message EM020, which states "No generation indicator has been set for the specified structure," typically occurs in the context of SAP's data dictionary or when working with structures in ABAP programs. This error indicates that the system cannot find a generation indicator for the specified structure, which is necessary for the generation of the corresponding data objects.
  Cause:
  
  Missing Generation Indicator: The structure in question does not have a generation indicator set. This can happen if the structure was created or modified but not properly activated.
  Inconsistent Data Dictionary: There may be inconsistencies in the data dictionary, possibly due to changes made without proper activation.
  Transport Issues: If the structure was transported from one system to another, it might not have been activated in the target system.
  
  Solution:
  
  
  Activate the Structure: 
  
  Go to the Data Dictionary (transaction SE11).
  Enter the name of the structure that is causing the error.
  Check if the structure is active. If it is not, activate it by clicking on the "Activate" button.
  
  
  
  Check for Dependencies: 
  
  Ensure that all dependent objects (like tables, views, etc.) that reference this structure are also activated.
  
  
  
  Recheck Transport Requests: 
  
  If the structure was transported, ensure that the transport request was completed successfully and that the structure is activated in the target system.
  
  
  
  Check for Naming Conflicts: 
  
  Ensure that there are no naming conflicts with other objects in the data dictionary that might be causing the issue.
  
  
  
  Review the Code: 
  
  If the error occurs during program execution, review the ABAP code to ensure that the structure is being referenced correctly.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SE11: Data Dictionary
  SE80: Object Navigator
  SE37: Function Builder (if the structure is used in function modules)
  
  
  
  Documentation: 
  
  SAP Help Portal and SAP Notes can provide additional insights and troubleshooting steps related to data dictionary issues.
  
  
  
  SAP Community: 
  
  Engaging with the SAP Community forums can provide insights from other users who may have encountered similar issues.
  
  
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or ABAP development team for further investigation.