How To Fix ON128 - Object type &1 does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: ON - Tools in area Object Modeler / Object Editor

• Message number: 128

• Message text: Object type &1 does not exist

What causes this issue?

There was an attempt to read object type '&V1&' from the database.
However the object type was not found. Either the object type was never
created or it has been deleted from the database.

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?

Check the syntax of the object type. If it is correct then the object
type you require unfortunately no longer exists. If it is incorrect
redo the operation.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ON128 - Object type &1 does not exist ?

  The SAP error message ON128, which states "Object type &1 does not exist," typically occurs when the system is unable to find a specified object type in the context of a transaction or operation. This error can arise in various scenarios, such as when working with master data, configuration settings, or during the execution of specific transactions.
  Causes:
  
  Incorrect Object Type: The object type specified in the transaction or program does not exist in the system. This could be due to a typo or an incorrect reference.
  Missing Configuration: The object type may not have been configured or created in the system. This is common in custom developments or when new object types are introduced.
  Authorization Issues: The user may not have the necessary authorizations to access the object type, leading to the system not recognizing it.
  Transport Issues: If the object type was recently transported from another system, it may not have been properly imported or activated in the target system.
  Data Consistency Issues: There may be inconsistencies in the database or application layer that prevent the system from recognizing the object type.
  
  Solutions:
  
  Verify Object Type: Check the spelling and ensure that the object type you are trying to access is correct. Refer to the documentation or configuration guides to confirm the object type.
  Check Configuration: If the object type is supposed to exist, verify that it has been properly configured in the system. This may involve checking transaction codes related to the object type.
  Authorization Check: Ensure that the user has the necessary authorizations to access the object type. This can be done by reviewing the user's roles and authorizations in the SAP system.
  Transport Validation: If the object type was recently transported, check the transport logs to ensure that it was successfully imported and activated. You may need to re-import or activate the transport.
  Database Consistency: Run consistency checks or database repair tools if you suspect data inconsistencies. This may involve working with your SAP Basis team.
  Consult Documentation: Refer to SAP Notes or the SAP Help Portal for any specific guidance related to the object type in question.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with transaction codes related to the object type you are working with, as they may provide insights into configuration and management.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the issue persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.