How To Fix OO800 - Class type '&' does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 800

• Message text: Class type '&' does not exist

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 OO800 - Class type '&' does not exist ?

  The SAP error message "OO800 Class type '&' does not exist" typically indicates that the system is unable to find a specified class type in the Object-Oriented (OO) programming environment of SAP. This error can occur in various contexts, such as when trying to create an instance of a class, when accessing a class, or when performing operations related to class types.
  Causes:
  
  Non-existent Class Type: The specified class type does not exist in the system. This could be due to a typo in the class name or the class not being created yet.
  Authorization Issues: The user may not have the necessary authorizations to access the class type.
  Transport Issues: If the class was recently transported from another system, it may not have been imported correctly.
  Namespace Issues: The class might be in a different namespace that is not accessible in the current context.
  Development Environment: The class might exist in a different development environment (e.g., development vs. production).
  
  Solutions:
  
  Check Class Existence: Verify that the class type exists in the system. You can do this by using transaction code SE24 (Class Builder) to search for the class.
  Correct Typo: Ensure that there are no typos in the class name or type you are trying to access.
  Check Authorizations: Ensure that the user has the necessary authorizations to access the class. You can check this with transaction SU53 or by consulting with your security team.
  Transport Check: If the class was recently transported, check the transport logs to ensure it was imported successfully. You can use transaction SE01 or SE09 to check transport requests.
  Namespace Verification: Ensure that you are using the correct namespace. If the class is in a different namespace, you may need to adjust your code or access method.
  Development Environment: If you are working in a development environment, ensure that the class has been activated and is available for use.
  
  Related Information:
  
  
  Transaction Codes:
  
  SE24: Class Builder - to view and manage classes.
  SE80: Object Navigator - to navigate through various objects including classes.
  SE01/SE09: Transport Organizer - to manage transport requests.
  SU53: Authorization Check - to analyze authorization issues.
  
  
  
  Documentation: Refer to SAP Help documentation for Object-Oriented Programming in ABAP for more details on class management and usage.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or development team for further investigation.