How To Fix OO353 - Object type &1: The object type appears several times

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 353

• Message text: Object type &1: The object type appears several times

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 OO353 - Object type &1: The object type appears several times ?

  The SAP error message OO353 indicates that there is a problem with the object type in the system, specifically that the object type appears multiple times in a context where it should be unique. This can occur in various scenarios, such as when defining object types in the Object-Oriented Programming (OOP) environment of SAP or when working with Business Object types.
  Cause:
  
  Duplicate Object Types: The most common cause of this error is that the same object type has been defined multiple times in the system, leading to ambiguity.
  Incorrect Configuration: There may be incorrect configurations or settings in the system that allow for the same object type to be registered more than once.
  Namespace Issues: If you are working in a custom namespace, there might be conflicts with standard SAP object types or other custom object types.
  
  Solution:
  
  Check Object Definitions: Review the definitions of the object types in the relevant transaction (e.g., SE80 for Object Navigator). Ensure that there are no duplicate entries for the object type in question.
  Remove Duplicates: If duplicates are found, remove or rename the redundant object types to ensure that each object type is unique.
  Namespace Management: If you are using custom namespaces, ensure that your custom object types do not conflict with standard SAP object types. Use a unique prefix for your custom object types.
  Transport Requests: If the issue arose after a transport, check the transport requests to ensure that they did not inadvertently introduce duplicates.
  Check Dependencies: Sometimes, the issue may arise from dependencies or references to the object type. Ensure that all references are correctly pointing to the intended object type.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SE80 (Object Navigator) or SE11 (Data Dictionary) to investigate object types and their definitions.
  Documentation: Refer to SAP documentation or help resources for guidelines on object type definitions and best practices in OOP.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Community Forums: Engage with SAP community forums or user groups for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the OO353 error in your SAP system.